List of secondary highways in Montana#Sec0232
{{Short description|None}}
{{Use mdy dates|date=February 2021}}
{{infobox state highway system
|title= Montana Secondary Highways
|shields={{infobox road/shieldmain/USA|state=MT|type=Sec|route=236}} {{infobox road/shieldmain/USA|state=MT|type=Sec|route=323}}
|caption=Highway marker for S-236 and S-323
|map=
|map_notes=
|map_alt=
|maint=MDT
|length_mi=
|length_ref=
|formed=1942
|interstate=Interstate n (I-n)
|us=U.S. Highway n (US n)
|statehwy=Montana Highway n (MT n)
|label1=Secondary
|field1=Secondary Highway n (S-n)
|links=MT
}}
The secondary highway system is a lower-level classification of state highway maintained by the Montana Department of Transportation (MDT) in the US state of Montana. Secondary highways first appeared on the state highway map in 1960, even though the secondary system was established in 1942.{{cite web |title = Federal-Aid Road Log |url = https://archive.org/details/montanafederalai1943mont |via = Archive.org |publisher = Montana Highway Department |access-date = May 5, 2017 |location = Helena |format = PDF |date = January 1, 1943 }} With very few exceptions, notably MT 287 and the former MT 789, Montana state highways numbered 201 and higher are secondary highways.
File:Montana Secondary Highway 486 in Columbia Falls, MT.jpg, August 2013]]
The highway markers for Montana's secondary highways are distinctive in that the route number appears in black on a white downward-pointing arrowhead. Early markers were white numbers on black arrowheads with the word Montana in the flat top of the inverted arrowhead and Secondary appearing below the route number on the shields.
__NOTOC__
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List of highways
{{routelist top|length_ref=}}
{{routelist row
|state=MT
|type=Sec
|route=201
|length_mi=69.511
|terminus_b=MT 200 in Fairview
|established=1952-07-30
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=202
|length_mi=34.646
|terminus_a=MT 200 west of Noxon
|established=1945-11-07
|decommissioned=1977-03-21
|notes=Replaced by MT 56
}}
{{routelist row
|state=MT
|type=Sec
|route=202
|length_mi=2.662
|terminus_b=McKenzie County Route 38 near Sidney
|established=1977-03-21
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=203
|length_mi=11.983
|terminus_a=S-269 north of Stevensville
|established=1952-07-30
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=204
|length_mi=1.596
|terminus_a=Milk River near Dodson
|terminus_b=US 2 in Dodson
|established=1952-07-30
|notes=none
}}
{{routelist row
|state=MT
|type=Sec 1945
|route=205
|sortkey=Sec0205
|length_mi=
|terminus_a=Upper Lynch Creek Road north of Plains
|terminus_b=US 10 Alternate (now MT 200) in Plains
|established=1945-11-07
|decommissioned=1945
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=205
|length_mi=24.361
|terminus_a=I-90 at Three Forks
|terminus_b=S-411 near Bozeman
|established=1976-07-01
|notes=none
}}
{{routelist row
|state=MT
|type=Sec2
|route=206
|sortkey=Sec0206
|length_mi=9.741
|terminus_a=MT 35 east of Evergreen
|terminus_b=US 2 near Columbia Falls
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=207
|length_mi=
|terminus_a=S-208
|terminus_b=US 93 in Kalispell
|established=1945-11-07
|decommissioned=1977
|notes=Now Lower Valley Road
}}
{{routelist row
|state=MT
|type=Sec
|route=207
|length_mi=21.862
|terminus_a=US 87/MT 3/MT 200 near Moccasin
|established=1978-03-02
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=208
|length_mi=
|terminus_a=US 93 north of Somers
|terminus_b=MT 35 north of Bigfork
|established=1945-11-07
|decommissioned=1977
|notes=Replaced by MT 82
}}
{{routelist row
|state=MT
|type=Sec
|route=208
|length_mi=9.412
|terminus_a=US 191 in Phillips County
|terminus_b=Whitewater
|established=1978-03-02
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=209
|length_mi=4.861
|terminus_b=MT 83 near Ferndale
|established=1945-11-07
|notes=Partially replaced by MT 83 in 1977
}}
{{routelist row
|state=MT
|type=Sec
|route=210
|length_mi=9.855
|terminus_a=MT 200 at Missoula
|terminus_b=I-90/US 12 at Clinton
|established=1976-07-01
|notes=Former U.S. 10
}}
{{routelist row
|state=MT
|type=Sec
|route=211
|length_mi=9.757
|terminus_a=Flathead River near Ronan
|established=1945-11-07
|notes=Round Butte Road
}}
{{routelist row
|state=MT
|type=Sec
|route=212
|length_mi=17.285
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=213
|length_mi=39.513
|terminus_b=Hwy 62 at the Port of Del Bonita
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=214
|length_mi=32.828
|terminus_a=S-213 near Cut Bank
|terminus_b=I-15 at Sweet Grass
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=215
|length_mi=21.299
|terminus_a=S-213 near Cut Bank
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=216
|length_mi=
|terminus_b=US 89
|established=1945-11-07
|decommissioned=1977
|notes=Replaced by MT 44
}}
{{routelist row
|state=MT
|type=Sec
|route=216
|length_mi=
|terminus_a=Marysville
|terminus_b=S-279 in Silver City
|established=1981-08-12
|decommissioned=1993
|notes=Now Marysville Road
}}
{{routelist row
|state=MT
|type=Sec 1945
|route=217
|sortkey=Sec0217
|length_mi=
|terminus_b=US 91 in Conrad
|established=1945-11-07
|decommissioned=1945
|notes=now S-534
}}
{{routelist row
|state=MT
|type=Sec
|route=217
|length_mi=14.087
|terminus_a=S-343 near Whitlash
|terminus_b=S-409 at Whitlash
|established=1976-07-01
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=218
|length_mi=29.253
|terminus_a=I-15 Bus in Conrad
|terminus_b=S-225 near Tiber Dam
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=219
|length_mi=19.818
|terminus_a=US 89 near Pendroy
|terminus_b=I-15 Bus near Conrad
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=220
|length_mi=17.940
|terminus_a=S-221 near Choteau
|terminus_b=S-219 east of Pendroy
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=221
|length_mi=24.444
|terminus_b=I-15/S-379 near Dutton
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec 1945
|route=222
|sortkey=Sec0222
|length_mi=
|terminus_a=
|terminus_b=
|established=1945-11-07
|decommissioned=1945
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=222
|length_mi=3.589
|terminus_a=I-15/S-278 south of Dillon
|terminus_b=I-15 Bus. at Dillon
|established=1976-07-01
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=223
|length_mi=52.901
|terminus_a=US 87/MT 80 near Fort Benton
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=224
|length_mi=18.950
|terminus_b=1200 Road S near Whitlash
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=225
|length_mi=56.220
|terminus_a=US 87 in Great Falls
|terminus_b=S-366 near Tiber Dam
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=226
|length_mi=14.560
|terminus_a=Eden
|terminus_b=US 87/US 89/MT 3 in Great Falls
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=227
|length_mi=16.756
|terminus_b=US 87/US 89/MT 3/MT 200 near Great Falls
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=228
|length_mi=42.633
|terminus_a=US 87/US 89/MT 3/MT 200 near Great Falls
|terminus_b=MT 80 near Fort Benton
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec 1945
|route=229
|sortkey=Sec0229
|length_mi=
|terminus_a=
|terminus_b=
|established=1945-11-07
|decommissioned=1954
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=229
|length_mi=2.592
|terminus_a=Helena city limits
|terminus_b=S-279 near Helena
|established=1976-07-01
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=230
|length_mi=
|terminus_b=US 87 at Fort Benton
|established=1945-11-07
|decommissioned=1977
|notes=Not built until 1945; replaced by MT 80
}}
{{routelist row
|state=MT
|type=Sec
|route=230
|length_mi=
|terminus_a=East of Laurel
|terminus_b=S-429 (Shiloh Road) in Billings
|established=1982-05-21
|decommissioned=1993
|notes=I-90 south frontage road
}}
{{routelist row
|state=MT
|type=Sec
|route=231
|length_mi=
|terminus_b=Goldstone
|established=1945-11-07
|decommissioned=1977
|notes=Restored as S-255 in 1984
}}
{{routelist row
|state=MT
|type=Sec
|route=231
|length_mi=5.674
|terminus_b=S-279 near Helena
|established=1983-02-24
|notes=none
}}
{{routelist row
|state=MT
|type=Sec2
|route=232
|sortkey=Sec0232
|length_mi=42.784
|terminus_b=Hwy 41 at the Port of Wild Horse, Alberta
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=233
|length_mi=30.482
|terminus_b=Hwy 21 at the Port of Willow Creek
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=234
|length_mi=21.662
|terminus_a=Rocky Boys Indian Reservation
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=235
|length_mi=
|terminus_a=S-230 near Coffee Creek
|established=1945-11-07
|decommissioned=1977
|notes=Replaced by MT 81
}}
{{routelist row
|state=MT
|type=Sec
|route=235
|length_mi=5.610
|terminus_a=MT 85 near Bozeman
|terminus_b=S-412 in Bozeman
|established=1983-09-19
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=236
|length_mi=88.235
|terminus_b=US 87 at Big Sandy
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=237
|length_mi=2.478
|terminus_a=S-426 near Hanover
|terminus_b=US 87 Business/US 191 Business at Lewistown
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=238
|length_mi=68.888
|terminus_b=US 89/MT 200 in Lewistown
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=239
|length_mi=11.666
|terminus_a=Utica
|terminus_b=US 87/MT 3/MT 200 in Hobson
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=240
|length_mi=25.333
|terminus_a=Cleveland
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=241
|length_mi=43.220
|terminus_b=Hwy 37 at the Port of Turner
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=242
|length_mi=
|terminus_a=Port of Morgan at the Saskatchewan border
|terminus_b=Malta
|established=1945-11-07
|decommissioned=1993
|notes=Replaced by US 191
}}
{{routelist row
|state=MT
|type=Sec
|route=243
|length_mi=21.185
|terminus_a=US 2 near Bowdoin National Wildlife Refuge
|terminus_b=US 2 in Saco
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=244
|length_mi=24.702
|terminus_a=US-87 north of Roundup
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=245
|length_mi=37.826
|terminus_a=Brusett
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=246
|length_mi=11.548
|terminus_a=Tampico
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=247
|length_mi=
|terminus_a=Port of Opheim
|established=1945-11-07
|decommissioned=1977
|notes=Replaced by MT 24
}}
{{routelist row
|state=MT
|type=Sec
|route=247
|length_mi=6.260
|terminus_a=S-322 near Mill Iron
|terminus_b=Webster
|established=1983-11-09
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=248
|length_mi=46.134
|established=1945-11-07
|notes=Old route of MT 5
}}
{{routelist row
|state=MT
|type=Sec
|route=249
|length_mi=
|terminus_a=MT 24 at Fort Peck
|established=1945-11-07
|decommissioned=1977
|notes=Replaced by MT 117
}}
{{routelist row
|state=MT
|type=Sec
|route=249
|length_mi=11.775
|terminus_b=US 287 near Cameron
|established=1984-08-29
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=250
|length_mi=49.416
|terminus_a=US 2 near Wolf Point
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=251
|length_mi=52.109
|terminus_b=MT 5/S-511 near Flaxville
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=252
|length_mi=23.438
|terminus_a=MT 200 near Circle
|terminus_b=Horse Creek
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=253
|length_mi=46.913
|terminus_b=MT 200 in Brockway
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=254
|length_mi=67.705
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec 1945
|route=255
|sortkey=Sec0255
|length_mi=
|terminus_a=
|terminus_b=
|established=1945-11-07
|decommissioned=yes
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=255
|length_mi=24.936
|terminus_b=Goldstone
|established=1984-08-29
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=256
|length_mi=
|terminus_a=MT 15 in Plentywood
|terminus_b=Hwy 6 near Port of Raymond
|established=1945-11-07
|decommissioned=1977
|notes=Replaced by MT 16
}}
{{routelist row
|state=MT
|type=Sec
|route=257
|length_mi=5.772
|terminus_b=Trout Creek
|established=1952-11-21
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=258
|length_mi=19.800
|terminus_b=ND 50 at North Dakota border
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec 1945
|route=259
|sortkey=Sec0259
|length_mi=
|terminus_a=
|terminus_b=
|established=1945-11-07
|decommissioned=1954
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=259
|length_mi=10.073
|terminus_a=S-360 near White Sulphur Springs
|terminus_b=US 89 at Newlan Creek
|established=1984-08-29
|notes=none
}}
{{routelist row
|state=MT
|type=Sec 1945
|route=260
|sortkey=Sec0260
|length_mi=
|terminus_a=Lambert
|terminus_b=MT 14/MT 16 in Sidney
|established=1945-11-07
|decommissioned=1950
|notes=Replaced by MT 23 (later MT 20; now MT 200)
}}
{{routelist row
|state=MT
|type=Sec
|route=260
|length_mi=3.577
|terminus_a=Bobtail Road near Libby
|established=1986-03-28
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=261
|length_mi=51.446
|established=1945-11-07
|notes=Former MT 7
}}
{{routelist row
|state=MT
|type=Sec
|route=262
|length_mi=
|terminus_a=County Road southeast of St. Regis
|established=1945-11-07
|decommissioned=1977
|notes=Now Diamond Road and Southside Road
}}
{{routelist row
|state=MT
|type=Sec
|route=263
|length_mi=14.786
|terminus_a=I-90 in Frenchtown
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec 1945
|route=264
|sortkey=Sec0264
|length_mi=
|terminus_b=S-265 in Missoula
|established=1945-11-07
|decommissioned=1974
|notes=Now 3rd Street and Clements Road
}}
{{routelist row
|state=MT
|type=Sec 1945
|route=265
|sortkey=Sec0265
|length_mi=
|terminus_b=S-264 in Missoula
|established=1945-11-07
|decommissioned=1974
|notes=Now South Avenue
}}
{{routelist row
|state=MT
|type=Sec 1945
|route=266
|sortkey=Sec0266
|length_mi=
|terminus_b=S-390 in Missoula
|established=1945-11-07
|decommissioned=1974
|notes=Now Higgins Avenue
}}
{{routelist row
|state=MT
|type=Sec
|route=267
|length_mi=
|terminus_a=Sawmill Gulch Road
|terminus_b=MT 200 in Missoula
|established=1945-11-07
|decommissioned=1993
|notes=Now Van Buren Street and Rattlesnake Drive
}}
{{routelist row
|state=MT
|type=Sec
|route=268
|length_mi=
|terminus_a=
|terminus_b=
|established=1945-11-07
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=269
|length_mi=21.284
|terminus_a=US 93/S-531 in Hamilton
|terminus_b=US 93 in Stevensville
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=270
|length_mi=
|terminus_a=Capitol
|established=1953
|decommissioned=1993
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=271
|length_mi=22.319
|terminus_b=MT 141 near Helmville
|established=1945-11-07
|notes=Partially replaced by MT 141 in 1978
}}
{{routelist row
|state=MT
|type=Sec
|route=272
|length_mi=2.024
|terminus_a=S-271 near Helmville
|established=1945-11-07
|decommissioned=1977
|notes=Replaced by MT 141
}}
{{routelist row
|state=MT
|type=Sec
|route=272
|length_mi=2.024
|terminus_a=Montana State Prison
|terminus_b=S-275 in Deer Lodge
|established=1987-12-01
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=273
|length_mi=12.181
|terminus_a=MT 48 near Opportunity
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=274
|length_mi=
|terminus_a=MT 43 near Wise River
|terminus_b=MT 1 near Opportunity
|established=1945-11-07
|decommissioned=1985
|notes=Restored in 2001 as S-569
}}
{{routelist row
|state=MT
|type=Sec
|route=275
|length_mi=
|terminus_a=
|terminus_b=
|established=1945-11-07
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=275
|length_mi=3.045
|terminus_a=I-90 in Deer Lodge
|terminus_b=I-90 near Deer Lodge
|established=1987-12-01
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=276
|length_mi=7.863
|terminus_b=Rocker
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=277
|length_mi=33.556
|terminus_b=S-323 near Ridgeway
|established=1952
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=278
|length_mi=61.092
|terminus_b=I-15/S-222 in Dillon
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=279
|length_mi=38.965
|terminus_a=I-15/US 287/S-453 in Helena
|terminus_b=MT 200 near Flesher Pass
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=280
|length_mi=16.050
|terminus_b=Trout Creek Canyon
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=281
|length_mi=
|established=1945-11-07
|decommissioned=1977
|notes=Replaced by MT 69
}}
{{routelist row
|state=MT
|type=Sec 1945
|route=282
|sortkey=Sec0282
|length_mi=
|terminus_a=
|terminus_b=
|established=1945-11-07
|decommissioned=1945
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=282
|length_mi=3.575
|terminus_a=Jack Mountain
|terminus_b=I-15/S-518 near Montana City
|established=1987-10-22
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=283
|length_mi=6.434
|terminus_a=Pony
|terminus_b=US 287 in Harrison
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=284
|length_mi=42.073
|terminus_a=US 12/US 287 near Canyon Ferry
|terminus_b=US 12 near Townsend
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=285
|length_mi=9.371
|terminus_a=Radersburg
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=286
|length_mi=3.930
|terminus_a=S-205 near Three Forks
|terminus_b=Trident
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=287
|length_mi=7.931
|terminus_a=MT 2 in Three Forks
|terminus_b=Williams Bridge Road south of Willow Creek
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=288
|length_mi=16.176
|terminus_a=S-347 in Amsterdam
|terminus_b=I-90/S-346 in Manhattan
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=289
|length_mi=
|terminus_b=US 191/S-291 near Four Corners
|established=1945-11-07
|decommissioned=1977
|notes=Replaced by MT 84
}}
{{routelist row
|state=MT
|type=Sec
|route=290
|length_mi=16.247
|terminus_b=16 Mile Creek near Maudlow
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=291
|length_mi=0.826
|terminus_b=I-90/MT 85 in Belgrade
|established=1945-11-07
|decommissioned=2001
|notes=Now Jackrabbit Lane; partially replaced by MT 85 in 1977
}}
{{routelist row
|state=MT
|type=Sec
|route=292
|length_mi=
|terminus_a=
|terminus_b=
|established=1945-11-07
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=292
|length_mi=8.789
|terminus_a=S-548 in Evergreen
|terminus_b=MT 40 near Whitefish
|established=1996-02-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=293
|length_mi=
|terminus_a=US 191/I-90 Bus. in Bozeman
|terminus_b=US 89 near Wilsall
|established=1945-11-07
|decommissioned=1977
|notes=Replaced by MT 86
}}
{{routelist row
|state=MT
|type=Sec
|route=294
|length_mi=29.169
|terminus_a=US 89 near Horse Butte
|terminus_b=US 12 near Martinsdale
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=295
|length_mi=16.379
|terminus_a=I-90 near Livingston
|terminus_b=I-90 near Mission
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=296
|length_mi=
|terminus_b=Lebo Lake
|established=1945-11-07
|decommissioned=1977
|notes=Now Two Dot Highway
}}
{{routelist row
|state=MT
|type=Sec
|route=297
|length_mi=37.818
|terminus_a=US 12/MT 3 in Shawmut
|terminus_b=MT 3 in Judith Gap
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=298
|length_mi=25.655
|terminus_a=Boulder Ranger Station
|terminus_b=US 191 in Big Timber
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=299
|length_mi=
|terminus_a=
|terminus_b=
|established=1945-11-07
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=300
|length_mi=13.341
|terminus_a=Big Coolie Creek
|terminus_b=US 12/MT 3/S-238 in Ryegate
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec 1945
|route=301
|sortkey=Sec0301
|length_mi=
|established=1945-11-07
|decommissioned=1956
|notes=Replaced by MT 3
}}
{{routelist row
|state=MT
|type=Sec
|route=302
|length_mi=14.322
|terminus_a=Molt
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=303
|length_mi=
|terminus_a=
|terminus_b=
|established=1945-11-07
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=304
|length_mi=
|terminus_a=Shepherd
|terminus_b=US 312
|established=1945-11-07
|decommissioned=1977
|notes=Now Shepherd Road
}}
{{routelist row
|state=MT
|type=Sec
|route=305
|length_mi=
|terminus_a=Laurel
|established=1945-11-07
|decommissioned=1977
|notes=Now 72nd Street and S-532 (King Avenue)
}}
{{routelist row
|state=MT
|type=Sec
|route=306
|length_mi=25.273
|terminus_b=Rapelje
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=307
|length_mi=
|terminus_a=US 212 at Red Lodge
|established=1945-11-07
|decommissioned=1977
|notes=Replaced by MT 78
}}
{{routelist row
|state=MT
|type=Sec
|route=308
|length_mi=14.383
|terminus_a=US 212 in Red Lodge
|established=1945-11-07
|notes=Partially replaced by MT 72
}}
{{routelist row
|state=MT
|type=Sec 1945
|route=309
|sortkey=Sec0309
|length_mi=
|terminus_a=
|terminus_b=
|established=1945-11-07
|decommissioned=1972
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=310
|length_mi=41.348
|terminus_b=US 12 near Musselshell
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=311
|length_mi=25.915
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec 1945
|route=312
|sortkey=Sec0312
|length_mi=
|terminus_a=
|terminus_b=
|established=1945-11-07
|decommissioned=1962
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=313
|length_mi=38.588
|terminus_a=Fort Smith
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=314
|length_mi=44.342
|terminus_a=WYO 338 near Decker
|established=1946-10-25
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=315
|length_mi=
|terminus_a=US 212 in Lame Deer
|terminus_b=North of I-94 near Forsyth
|established=1945-11-07
|decommissioned=1977
|notes=Replaced by MT 45
}}
{{routelist row
|state=MT
|type=Sec 1945
|route=316
|sortkey=Sec0316
|length_mi=
|terminus_a=
|terminus_b=
|established=1945-11-07
|decommissioned=1945
|notes=none
}}
{{routelist row
|state=MT
|type=Sec2
|route=317
|sortkey=Sec0317
|length_mi=3.503
|terminus_a=US 93 in Kalispell
|terminus_b=MT 35 in Kalispell
|established=1953-04-03
|decommissioned=2012
|circa_decommissioned=yes
|notes=none
}}
{{routelist row
|state=MT
|type=Sec 1945
|route=318
|sortkey=Sec0318
|length_mi=
|terminus_a=Swords Park
|terminus_b=Billings Municipal Airport
|established=1945-11-07
|decommissioned=1974
|notes=Now East Airport Road
}}
{{routelist row
|state=MT
|type=Sec 1945
|route=319
|sortkey=Sec0319
|length_mi=
|terminus_a=US 212 near Broadus
|terminus_b=Wyoming border south of Biddle
|established=1945-11-07
|decommissioned=1967
|notes=Replaced by MT 59
}}
{{routelist row
|state=MT
|type=Sec
|route=320
|length_mi=6.070
|terminus_b=Ismay
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=321
|length_mi=
|terminus_a=
|terminus_b=
|established=1945-11-07
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=322
|length_mi=26.908
|terminus_a=Medicine Rocks
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec2
|route=323
|sortkey=Sec0323
|length_mi=71.126
|terminus_a=US 212/S-326 in Alzada
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=324
|length_mi=34.429
|terminus_a=SH 29 at Bannock Pass
|terminus_b=I-15 near Clark Canyon Dam
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=325
|length_mi=13.353
|terminus_b=North Chinook Reservoir
|established=1946-05-20
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=326
|length_mi=
|terminus_b=S-209 near Bigfork
|established=1954
|decommissioned=1977
|notes=Replaced by MT 83
}}
{{routelist row
|state=MT
|type=Sec2
|route=326
|sortkey=Sec0326
|length_mi=1.683
|terminus_a=WYO 112 near Alzada
|terminus_b=US 212/S-323 in Alzada
|established=1990-02-27
|notes=Formerly S-492
}}
{{routelist row
|state=MT
|type=Sec
|route=327
|length_mi=15.043
|terminus_a=ND 1804 at Fort Union
|established=1953-08-10
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=328
|length_mi=
|established=1953-08-10
|decommissioned=1977
|notes=Now 21 Mile Road and Oswald Road
}}
{{routelist row
|state=MT
|type=Sec
|route=328
|length_mi=18.843
|terminus_a=S-323 near Ekalaka
|terminus_b=SD 20 near Capitol
|established=1994-10-13
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=329
|length_mi=
|terminus_a=
|terminus_b=
|established=1945-11-07
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=330
|length_mi=36.924
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=331
|length_mi=10.072
|terminus_a=US 87/US 89 in Belt
|terminus_b=S-228 near Highwood
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=332
|length_mi=50.391
|terminus_a=S-447 near Brandenburg
|terminus_b=MT 59 near Twelve Mile Dam
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=333
|length_mi=
|terminus_a=US 12 east of Miles City
|terminus_b=Mizpah
|established=1945-11-07
|decommissioned=1983
|notes=Now Mizpah Road and Trail Creek Road
}}
{{routelist row
|state=MT
|type=Sec 1945
|route=334
|sortkey=Sec0334
|length_mi=
|terminus_a=Port of Scobey
|established=1945-11-07
|decommissioned=1962
|notes=Replaced by MT 13
}}
{{routelist row
|state=MT
|type=Sec
|route=334
|length_mi=3.760
|terminus_a=Beaver Creek Reservoir
|established=1994-09-01
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=335
|length_mi=14.598
|terminus_a=Balier Reservoir
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=336
|length_mi=14.595
|terminus_a=MT 7 near Rush Hall
|terminus_b=ND 16 near Carlyle
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec 1945
|route=337
|sortkey=Sec0337
|length_mi=
|terminus_a=
|terminus_b=
|established=1956
|decommissioned=1957
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=338
|length_mi=21.558
|terminus_b=Hogeland
|established=1954-01-29
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=339
|length_mi=
|terminus_a=US 89 near Wilsall
|terminus_b=Smith Creek Road northeast of Wilsall
|established=1954-01-29
|decommissioned=1977
|notes=Now Shields River Road
}}
{{routelist row
|state=MT
|type=Sec
|route=340
|length_mi=18.501
|terminus_a=Mildred
|established=1954-01-29
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=341
|length_mi=21.930
|terminus_a=MT 200 near Jordan
|terminus_b=Fort Peck Lake
|established=1954-05-15
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=342
|length_mi=0.859
|terminus_a=US 212 near Crow Agency
|terminus_b=Little Big Horn Battlefield
|established=1954-12-13
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=343
|length_mi=43.227
|terminus_a=I-15/S-215 in Oilmont
|established=1954-03-26
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=344
|length_mi=35.648
|established=1954-03-26
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=345
|length_mi=12.036
|terminus_a=US 191 in Gallatin Gateway
|terminus_b=Kagy Boulevard in Bozeman
|established=1951-10-31
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=346
|length_mi=7.975
|terminus_a=I-90/S-288 in Manhattan
|terminus_b=S-290 at Manhattan city limits
|established=1946-10-25
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=347
|length_mi=6.226
|terminus_a=S-288 in Amsterdam
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=348
|length_mi=13.974
|terminus_a=Gilles
|terminus_b=MT 1 in Philipsburg
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec 1945
|route=349
|length_mi=
|terminus_a=
|terminus_b=
|established=1954-05-06
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=350
|length_mi=5.487
|terminus_a=Homestead
|terminus_b=MT 16 near Medicine Lake
|established=1954-05-06
|notes=none
}}
{{routelist row
|state=MT
|type=Sec 1945
|route=351
|length_mi=
|terminus_a=
|terminus_b=
|established=1945-11-07
|decommissioned=1954
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=352
|length_mi=5.093
|terminus_b=Lake Mary Ronan
|established=1945-11-07
|notes=none
}}
{{Routelist row
|state=MT
|type=Sec
|route=353
|length_mi=
|terminus_a=Round Butte
|terminus_b=Moiese
|established=1945-11-07
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=354
|length_mi=8.002
|terminus_a=Polson
|terminus_b=
|established=1945-11-07
|notes=none
}}
{{Routelist row
|state=MT
|type=Sec 1945
|route=355
|length_mi=
|terminus_a=Helena
|terminus_b=
|established=1954
|decommissioned=1974
|notes=none
}}
{{Routelist row
|state=MT
|type=Sec
|route=356
|length_mi=
|terminus_b=Central Avenue in Helena
|established=1945-11-07
|decommissioned=1977
|notes=Formerly ended at S-279 near Birdseye
}}
{{routelist row
|state=MT
|type=Sec
|route=357
|length_mi=26.800
|terminus_a=Ruby River Reservoir
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=358
|length_mi=27.838
|established=1954-09-01
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=359
|length_mi=15.964
|terminus_a=US 287 north of Harrison
|terminus_b=MT 2/MT 69 northwest of Cardwell
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=360
|length_mi=18.217
|terminus_a=Fort Logan
|terminus_b=US 12/US 89 in White Sulphur Springs
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec 1945
|route=361
|length_mi=
|terminus_a=
|terminus_b=
|established=1945-11-07
|decommissioned=1947
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=361
|length_mi=
|terminus_a=
|terminus_b=
|established=1975
|decommissioned=1983
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=362
|length_mi=
|terminus_a=
|terminus_b=
|established=1945-11-07
|decommissioned=1977
|notes=now S-571
}}
{{routelist row
|state=MT
|type=Sec
|route=363
|length_mi=11.203
|established=1945-11-07
|notes=none
}}
{{Routelist row
|state=MT
|type=Sec
|route=364
|length_mi=
|terminus_b=South Black Coulee Road near Malta
|established=1945-11-07
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=365
|length_mi=24.231
|terminus_a=Brady
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=366
|length_mi=49.245
|terminus_b=S-223 near Chester
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=367
|length_mi=
|terminus_a=
|terminus_b=
|established=1945-11-07
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=368
|length_mi=
|terminus_a=
|terminus_b=
|established=1945-11-07
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=369
|length_mi=
|terminus_a=
|terminus_b=
|established=1945-11-07
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=370
|length_mi=1.954
|terminus_b=S-203 near Stevensville
|established=1945-11-07
|notes=none
}}
{{Routelist row
|state=MT
|type=Sec
|route=371
|length_mi=
|terminus_a=Melville
|terminus_b=Twodot
|established=1945-11-07
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=372
|length_mi=
|terminus_a=
|terminus_b=
|established=1945-11-07
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=373
|length_mi=4.529
|terminus_b=Corvallis
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=374
|length_mi=6.503
|terminus_b=Outlook
|established=1945-11-07
|notes=none
}}
{{Routelist row
|state=MT
|type=Sec
|route=375
|length_mi=
|terminus_a=Continental Drive—downtown Butte
|terminus_b=US 10 southeast of Butte
|established=1945-11-07
|decommissioned=1993
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=376
|length_mi=
|terminus_a=Fort Belknap Agency
|terminus_b=US 191 near Landusky
|established=1956
|decommissioned=1977
|notes=Replaced by MT 66
}}
{{routelist row
|state=MT
|type=Sec
|route=377
|length_mi=
|terminus_a=Stevensville
|terminus_b=Bitterroot National Forest
|established=1955
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=378
|length_mi=
|terminus_a=
|terminus_b=
|established=1945-11-07
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=379
|length_mi=18.008
|terminus_a=I-15/S-221 near Dutton
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=380
|length_mi=
|terminus_a=
|terminus_b=
|established=1955
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=381
|length_mi=16.370
|terminus_a=Colding Creek
|terminus_b=US 12 near Roundup
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=382
|length_mi=15.703
|terminus_a=MT 28 near Hot Springs
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=384
|length_mi=
|terminus_a=
|terminus_b=
|established=1955
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=384
|length_mi=57.052
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=385
|length_mi=
|terminus_a=
|terminus_b=
|established=1945-11-07
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=386
|length_mi=1.534
|terminus_b=MT 80 in Fort Benton
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=387
|length_mi=2.646
|terminus_a=MT 80 in Fort Benton
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=388
|length_mi=
|terminus_a=
|terminus_b=
|established=1955
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=389
|length_mi=
|terminus_a=
|terminus_b=
|established=1945-11-07
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec 1945
|route=390
|sortkey=Sec0390
|length_mi=
|established=1945-11-07
|decommissioned=1974
|notes=Now 39th Street and Russell Street
}}
{{routelist row
|state=MT
|type=Sec2
|route=391
|sortkey=Sec0391
|length_mi=16.563
|terminus_a=Yarger
|terminus_b=US 212/MT 59 in Broadus
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec 1945
|route=392
|length_mi=
|terminus_a=
|terminus_b=
|established=1945-11-07
|decommissioned=1963
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=393
|length_mi=6.594
|terminus_a=Newcomb
|established=1945-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=394
|length_mi=
|terminus_a=
|terminus_b=
|established=1945-11-07
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec 1945
|route=395
|length_mi=
|terminus_a=
|terminus_b=
|established=1946-10-25
|decommissioned=1962
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=396
|length_mi=16.908
|terminus_b=Coburg
|established=1946-10-25
|notes=Former routing of US 2
}}
{{routelist row
|state=MT
|type=Sec
|route=397
|length_mi=
|terminus_a=Belfry
|terminus_b=Wyoming border
|established=1945-11-07
|decommissioned=1977
|notes=Replaced by MT 72
}}
{{routelist row
|state=MT
|type=Sec 1945
|route=398
|sortkey=Sec0398
|length_mi=
|terminus_a=County road {{convert|4.7|mi|km|abbr=on}} north of MT 48
|terminus_b=MT 48 {{convert|3|mi|km|abbr=on}} east of Anaconda
|established=1946-10-25
|decommissioned=1956
|notes=Replaced by S-273
}}
{{routelist row
|state=MT
|type=Sec
|route=398
|length_mi=7.009
|terminus_a=US 212/MT 59 in Broadus
|terminus_b=Powderville
|established=2000-05-25
|notes=Formerly S-402
}}
{{routelist row
|state=MT
|type=Sec
|route=399
|length_mi=25.228
|terminus_a=I-90/MT 55 in Whitetail
|established=1946-10-25
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=400
|length_mi=12.335
|terminus_a=Buffalo
|established=1946-10-25
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=401
|length_mi=
|terminus_a=
|terminus_b=
|established=1946-10-25
|decommissioned=1977
|notes=Replaced by MT 55
}}
{{routelist row
|state=MT
|type=Sec
|route=401
|length_mi=7.903
|established=1987-10-13
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=402
|length_mi=7.009
|terminus_a=US 212/MT 59 in Broadus
|terminus_b=Powderville
|established=1946-10-25
|decommissioned=1987
|notes=Now S-398
}}
{{routelist row
|state=MT
|type=Sec 1945
|route=403
|length_mi=
|terminus_a=
|terminus_b=
|established=1946-10-25
|decommissioned=1974
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=404
|length_mi=
|terminus_a=Brockton
|terminus_b=
|established=1946-10-25
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=405
|length_mi=28.371
|terminus_a=US 2 near Bainville
|established=1946-10-25
|notes=none
}}
{{routelist row
|state=MT
|type=Sec 1945
|route=406
|length_mi=
|terminus_a=
|terminus_b=
|established=1946-10-25
|decommissioned=1965
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=407
|length_mi=
|terminus_a=
|terminus_b=
|established=1946-10-25
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=408
|length_mi=19.568
|terminus_a=US 287 near Gilman
|terminus_b=US 89 in Fairfield
|established=1946-10-25
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=409
|length_mi=40.499
|terminus_b=Hwy 880 near Whitlash
|established=1946-10-25
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=410
|length_mi=
|terminus_a=
|terminus_b=
|established=1946-10-25
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=411
|length_mi=10.744
|terminus_a=S-205/S-570 in Bozeman
|terminus_b=Springhill Cemetery
|established=1946-10-25
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=412
|length_mi=
|terminus_a=
|terminus_b=
|established=1947
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=412
|length_mi=0.349
|terminus_a=S-411 near Bozeman
|terminus_b=S-205 bridge in Bozeman
|established=1995
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=413
|length_mi=24.709
|terminus_b=MT 7 near Saint Phillip
|established=1948-07-30
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=414
|length_mi=
|terminus_a=
|terminus_b=
|established=1948-07-30
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=415
|length_mi=
|terminus_a=
|terminus_b=
|established=1950-03-20
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=416
|length_mi=14.113
|terminus_b=I-90/US 212 in Billings
|established=1950-03-20
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=417
|length_mi=16.530
|established=1950-07-03
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=418
|length_mi=
|terminus_a=
|terminus_b=
|established=1951-03-27
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=418
|length_mi=16.124
|terminus_b=Pryor
|established=2000-01-27
|notes=none
}}
{{routelist row
|state=MT
|type=Sec2
|route=419
|sortkey=Sec0419
|length_mi=21.254
|terminus_a=Limestone
|terminus_b=MT 78 near Absarokee
|established=1951-03-27
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=420
|length_mi=6.929
|terminus_b=MT 78 near Absarokee
|established=1951-01-16
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=421
|length_mi=18.167
|terminus_a=MT 78 near Columbus
|terminus_b=US 212 near Joliet
|established=1951-01-16
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=422
|length_mi=8.521
|terminus_a=MT 41 in Silver Star
|terminus_b=MT 55 near Waterloo
|established=1951-01-16
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=423
|length_mi=
|terminus_a=
|terminus_b=
|established=1951-03-27
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec2
|route=424
|sortkey=Sec0424
|length_mi=17.108
|terminus_a=US 93 in Kalispell
|terminus_b=US 93 west of Whitefish
|established=1951
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=425
|length_mi=
|terminus_a=Roscoe
|terminus_b=Fishtail
|established=1951
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=426
|length_mi=26.573
|terminus_a=US 87/MT 3/MT 200 near Kolin
|terminus_b=US 191 in Lewistown
|established=1951-12-28
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=427
|length_mi=12.319
|terminus_a=US 89 at Currie Spring
|terminus_b=US 87/MT 3/MT 200 in Raynesford
|established=1951-12-28
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=428
|length_mi=
|terminus_a=US 191 in Judith Gap
|terminus_b=Living Springs Road
|established=1952
|decommissioned=1977
|notes=Replaced by an extended S-297
}}
{{routelist row
|state=MT
|type=Sec
|route=428
|length_mi=
|terminus_a=Zoo Drive in Billings
|terminus_b=S-429 (Shiloh Road) in Billings
|established=1999
|decommissioned=2001
|notes=I-90 south Frontage Road
}}
{{routelist row
|state=MT
|type=Sec
|route=429
|length_mi=6.392
|terminus_a=Zoo Drive in Billings
|terminus_b=S-428 (I-90 Frontage Road) in Billings
|established=1952
|decommissioned=2001
|notes=Now Shiloh Road
}}
{{routelist row
|state=MT
|type=Sec
|route=430
|length_mi=
|terminus_a=
|terminus_b=
|established=1955
|decommissioned=1980
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=430
|length_mi=3.802
|terminus_b=S-284 near Canyon Creek
|established=1987-07-28
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=431
|length_mi=19.999
|terminus_a=US 89/S-565 near Fairfield
|established=1955-11-23
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=432
|length_mi=46.932
|terminus_b=US 287/S-223 in Big Sandy
|established=1955-12-02
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=433
|length_mi=
|terminus_a=
|terminus_b=
|established=1955
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=434
|length_mi=18.032
|terminus_a=I-15 near Wolf Creek
|terminus_b=MT 200 near Johnson Mountain
|established=1955-12-02
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=435
|length_mi=
|terminus_a=
|terminus_b=
|established=1955
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=435
|length_mi=15.361
|terminus_b=Johnson Mountain
|established=1987-07-28
|notes=none
}}
{{Routelist row
|state=MT
|type=Sec
|route=436
|length_mi=
|terminus_b=Saskatchewan border
|established=1955
|decommissioned=1977
|notes=Now local Blaine County roads
}}
{{routelist row
|state=MT
|type=Sec
|route=437
|length_mi=8.895
|terminus_a=S-285 near Radersburg
|established=1956-05-04
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=438
|length_mi=52.465
|terminus_b=S-248 nearGlentana
|established=1955-11-23
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=440
|length_mi=
|terminus_a=
|terminus_b=
|established=1955
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=441
|length_mi=7.829
|terminus_b=MT 1 near Opportunity
|established=1956-02-09
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=444
|length_mi=19.773
|terminus_a=US 2 near Blackfoot
|established=1956-07-31
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=445
|length_mi=
|terminus_a=
|terminus_b=
|established=1955
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=446
|length_mi=2.778
|terminus_a=I-94/S-447 in Rosebud
|terminus_b=Cartersville
|established=1956-05-17
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=447
|length_mi=52.478
|terminus_b=I-94/S-446 in Rosebud
|established=1956-05-17
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=448
|length_mi=30.108
|terminus_a=US 87 in Box Elder
|terminus_b=US 2/S-449 Gildford
|established=1955-12-05
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=449
|length_mi=16.590
|terminus_a=US 2/S-448 in Gildford
|terminus_b=Milk River
|established=1955-12-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=450
|length_mi=
|terminus_a=
|terminus_b=
|established=1955
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec 1945
|route=451
|length_mi=
|terminus_a=
|terminus_b=
|established=1955
|decommissioned=1960
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=451
|length_mi=38.047
|terminus_a=WYO 345 south of Wyola
|terminus_b=I-90/US 87 north of Wyola
|established=1988-02-26
|notes=Formerly US 87
}}
{{routelist row
|state=MT
|type=Sec
|route=452
|length_mi=
|terminus_a=
|terminus_b=
|established=1955
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=453
|length_mi=5.121
|terminus_a=I-15/US 287/S-279 in Helena
|terminus_b=Lake Helena
|established=1955-02-20
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=454
|length_mi=3.330
|terminus_a=Unionville
|established=1955-02-20
|notes=none
}}
{{routelist row
|state=MT
|type=Sec 1945
|route=455
|length_mi=
|terminus_a=
|terminus_b=
|established=1956
|decommissioned=1957
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=456
|length_mi=
|terminus_a=
|terminus_b=
|established=1955
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec 1945
|route=457
|length_mi=
|terminus_a=
|terminus_b=
|established=1955
|decommissioned=1970
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=457
|length_mi=1.506
|terminus_b=I-90/US 87 near Wyola
|established=1988-02-28
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=458
|length_mi=
|terminus_a=
|terminus_b=
|established=1956
|decommissioned=1977
|notes=none
}}
{{Routelist row
|state=MT
|type=Sec
|route=459
|length_mi=
|terminus_a=Great Falls
|terminus_b=S-226
|established=1956
|decommissioned=1993
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=460
|length_mi=
|terminus_a=
|terminus_b=
|established=1956
|decommissioned=1977
|notes=none
}}
{{Routelist row
|state=MT
|type=Sec
|route=461
|length_mi=
|terminus_a=MT 200 near Paradise
|terminus_b=St. Regis
|established=1956
|decommissioned=1977
|notes=Replaced by MT 135
}}
{{routelist row
|state=MT
|type=Sec
|route=462
|length_mi=38.464
|terminus_a=MT 59 in Rock Springs
|terminus_b=MT 200 near Brockway
|established=1956-12-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=463
|length_mi=14.202
|terminus_a=Willow Creek Dam
|terminus_b=I-90 in Lodge Grass
|established=1957-03-08
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=464
|length_mi=33.671
|terminus_a=US 2/US 89 in Browning
|terminus_b=US 89 in Babb
|established=1957-06-28
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=465
|length_mi=
|terminus_a=
|terminus_b=
|established=1956
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=466
|length_mi=2.160
|terminus_a=Hansons Creek Road near Lewistown
|terminus_b=S-238 near Lewistown
|established=1956-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=467
|length_mi=31.745
|terminus_a=MT 200S in Lindsay
|established=1957-03-27
|notes=none
}}
{{routelist row
|state=MT
|type=Sec 1945
|route=468
|length_mi=
|terminus_a=
|terminus_b=
|established=1957
|decommissioned=1958
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=469
|length_mi=
|terminus_a=
|terminus_b=
|established=1956
|decommissioned=1985
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=470
|length_mi=24.032
|terminus_a=MT 200S in Lindsay
|terminus_b=S-254 in Bloomfield
|established=1957-03-27
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=471
|length_mi=22.069
|terminus_a=NFS Route 9 at Idaho border near Murray, Idaho
|terminus_b=MT 200 near Thompson Falls, Montana
|established=1957-01-29
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=472
|length_mi=
|terminus_a=
|terminus_b=
|established=1956
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=472
|length_mi=16.5
|terminus_b=Reynolds Creek Road near Martin Creek Campground
|established=1993-11
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=473
|length_mi=14.394
|terminus_a=Painted Rocks State Park
|established=1957-05-21
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=474
|length_mi=3.859
|terminus_a=S-263 near Frenchtown
|terminus_b=I-90/US 93/MT 200 in Wye
|established=1957-06-27
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=475
|length_mi=
|terminus_a=
|terminus_b=
|established=1956
|decommissioned=1977
|notes=none
}}
{{Routelist row
|state=MT
|type=Sec
|route=476
|length_mi=
|terminus_b=Montanapolis Springs
|established=1956
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=477
|length_mi=
|terminus_a=
|terminus_b=
|established=1956
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=478
|length_mi=21.995
|terminus_a=US 191 near Big Timber
|terminus_b=Stephens Hill Road near Rapelje
|established=1957-09-23
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=479
|length_mi=
|terminus_a=
|terminus_b=
|established=1956
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=480
|length_mi=19.696
|established=1957-12-05
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=481
|length_mi=
|terminus_a=
|terminus_b=
|established=1957
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=482
|length_mi=7.176
|terminus_a=US 2 near Libby Creek
|terminus_b=US 2 near Libby
|established=1958-03-05
|notes=none
}}
{{Routelist row
|state=MT
|type=Sec
|route=483
|length_mi=
|terminus_a=Port of Del Bonita
|terminus_b=Santa Rita
|established=1957
|decommissioned=1977
|notes=Replaced by an extension of S-213
}}
{{routelist row
|state=MT
|type=Sec
|route=484
|length_mi=27.863
|terminus_a=Fort Howe
|terminus_b=US 212 near Ashland
|established=1958-09-03
|notes=none
}}
{{Routelist row
|state=MT
|type=Sec
|route=485
|length_mi=
|terminus_a=Trailcreek
|terminus_b=Columbia Falls
|established=1958
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec2
|route=486
|sortkey=Sec0486
|length_mi=22.646
|terminus_a=US 2 in Columbia Falls
|terminus_b=Camas Creek entrance of Glacier National Park
|established=1958-09-16
|notes=none
}}
{{routelist row
|state=MT
|type=Sec2
|route=487
|sortkey=Sec0487
|length_mi=7.223
|terminus_a=US 93 in Whitefish
|terminus_b=Whitefish Mountain Resort at Big Mountain
|established=1958-09-16
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=488
|length_mi=
|terminus_a=
|terminus_b=
|established=1959
|decommissioned=1981
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=489
|length_mi=18.006
|terminus_a=MT 59 near Miles City
|terminus_b=Kinsey
|established=1985-02-19
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=490
|length_mi=
|terminus_a=
|terminus_b=
|established=1959
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=492
|length_mi=
|terminus_a=
|terminus_b=
|established=1959
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=493
|length_mi=4.877
|terminus_b=Anticline Road near Plevna
|established=1959-05-14
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=494
|length_mi=22.743
|established=1959-05-14
|notes=none
}}
{{Routelist row
|state=MT
|type=Sec
|route=495
|length_mi=
|terminus_a=Great Falls
|terminus_b=
|established=1959
|decommissioned=1977
|notes=none
}}
{{Routelist row
|state=MT
|type=Sec
|route=496
|length_mi=
|terminus_a=Bainville
|terminus_b=MT 16
|established=1959
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=497
|length_mi=
|terminus_a=
|terminus_b=
|established=1959
|decommissioned=1977
|notes=none
}}
{{Routelist row
|state=MT
|type=Sec
|route=498
|length_mi=
|terminus_a=In Great Falls
|established=1959
|decommissioned=1974
|notes=Replaced by bypass US 87
}}
{{Routelist row
|state=MT
|type=Sec
|route=499
|length_mi=
|terminus_a=Follows the north end of Hebgen Lake from MT 287
|terminus_b=US 191
|established=1959
|decommissioned=1964
|notes=Replaced by US 287 in 1964
}}
{{routelist row
|state=MT
|type=Sec
|route=500
|length_mi=30.407
|terminus_a=US 12 near Melstone
|established=1960-03-08
|notes=none
}}
{{Routelist row
|state=MT
|type=Sec
|route=501
|length_mi=
|terminus_a=MT 38 at Grantsdale
|terminus_b=Sleeping Child Hot Springs
|established=1960
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=502
|length_mi=
|terminus_a=
|terminus_b=
|established=1960
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec2
|route=503
|sortkey=Sec0503
|length_mi=12.166
|terminus_a=US 93A near Kalispell
|terminus_b=US 2 in Kalispell
|established=1960-11-03
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=504
|length_mi=12.847
|terminus_b=Cabin Creek
|established=1960-12-13
|notes=none
}}
{{Routelist row
|state=MT
|type=Sec
|route=505
|length_mi=
|terminus_a=Lewistown
|terminus_b=Glengarry
|established=1960
|decommissioned=1980
|notes=replaced by S-426
}}
{{Routelist row
|state=MT
|type=Sec
|route=506
|length_mi=
|terminus_a=Yaak
|terminus_b=Libby
|established=1961
|decommissioned=1977
|notes=Replaced by S-567
}}
{{routelist row
|state=MT
|type=Sec
|route=507
|length_mi=2.533
|terminus_b=I-90 near Huson
|established=1961-07-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec2
|route=508
|sortkey=Sec0508
|length_mi=29.272
|established=1961-09-12
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=509
|length_mi=37.499
|terminus_b=Red Rock Lakes National Wildlife Refuge
|established=1961-09-12
|notes=none
}}
{{Routelist row
|state=MT
|type=Sec
|route=510
|length_mi=
|terminus_a=Brockway
|terminus_b=Dry Ash Creek
|established=1961
|decommissioned=1999
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=511
|length_mi=13.790
|terminus_a=MT 5/S-251 in Flaxville
|terminus_b=Whitetail
|established=1962-01-04
|notes=Formerly MT 13; formerly ended at Port of Whitetail
}}
{{routelist row
|state=MT
|type=Sec
|route=512
|length_mi=13.790
|terminus_a=MT 1/S-513 in Hall
|terminus_b=New Chicago Road near Hall
|established=1962-01-15
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=513
|length_mi=9.663
|terminus_a=Lower Willow Creek Road near Hall
|terminus_b=MT 1/S-512 in Hall
|established=1962-01-15
|notes=none
}}
{{Routelist row
|state=MT
|type=Sec
|route=514
|length_mi=
|terminus_a=Poplar
|terminus_b=Plentywood
|established=1962
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=515
|length_mi=
|terminus_a=US 2
|terminus_b=Katy Lake
|established=1961
|decommissioned=1977
|notes=part now S-573
}}
{{routelist row
|state=MT
|type=Sec
|route=515
|length_mi=
|terminus_a=
|terminus_b=
|established=1991
|decommissioned=2001
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=516
|length_mi=
|established=
|decommissioned=yes
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=516
|length_mi=6.008
|terminus_b=S-517 in Coalridge
|established=1961-12-16
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=517
|length_mi=12.291
|terminus_a=MT 16 near Antelope
|terminus_b=S-516 in Coalridge
|established=1961-12-16
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=518
|length_mi=4.468
|terminus_a=I-15/S-282 in Montana City
|terminus_b=US 12/US 287 in East Helena
|established=1961-11-28
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=519
|length_mi=
|terminus_a=
|terminus_b=
|established=1962
|decommissioned=1978
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=520
|length_mi=
|terminus_a=
|terminus_b=
|established=1962
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec 1945
|route=521
|length_mi=
|terminus_a=
|terminus_b=
|established=1962
|decommissioned=1972
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=522
|length_mi=2.368
|terminus_b=Worden
|established=1962-08-23
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=523
|length_mi=
|terminus_a=
|terminus_b=
|established=1963
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=524
|length_mi=
|terminus_a=
|terminus_b=
|established=1962
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=525
|length_mi=
|terminus_a=
|terminus_b=
|established=1962
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=526
|length_mi=
|terminus_a=
|terminus_b=
|established=1963
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=527
|length_mi=
|terminus_a=
|terminus_b=
|established=1963
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=528
|length_mi=18.703
|terminus_a=Prairie Elk Road near Oswego
|established=1998-07-29
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=529
|length_mi=9.959
|terminus_a=Clear Creek Road near Chinook
|terminus_b=S-240 in Chinook
|established=1963-09-19
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=530
|length_mi=
|terminus_a=
|terminus_b=
|established=1963
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=531
|length_mi=6.308
|terminus_a=US 93 in Grantsdale
|terminus_b=US 93/S-269 in Hamilton
|established=1963-10-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=532
|length_mi=17.628
|terminus_a=I-90/US 212/US 310 in Laurel
|terminus_b=I-90/US 212 in Billings
|established=1964-02-17
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=533
|length_mi=
|terminus_a=
|terminus_b=
|established=1965
|decommissioned=2005
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=534
|length_mi=27.894
|terminus_b=S-218 in Conrad
|established=1964-06-11
|notes=none
}}
{{routelist row
|state=MT
|type=Sec 1945
|route=535
|length_mi=
|terminus_a=
|terminus_b=
|established=1964
|decommissioned=1974
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=536
|length_mi=
|terminus_a=
|terminus_b=
|established=1964
|decommissioned=1993
|notes=none
}}
{{routelist row
|state=MT
|type=Sec2
|route=537
|sortkey=Sec0537
|length_mi=23.126
|terminus_b=Snake Creek Road near Hinsdale
|established=1965-03-01
|notes=none
}}
{{routelist row
|state=MT
|type=Sec 1945
|route=538
|length_mi=
|terminus_a=
|terminus_b=
|established=1965
|decommissioned=1974
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=539
|length_mi=
|terminus_a=
|terminus_b=
|established=1965
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=540
|length_mi=31.859
|terminus_b=US 89 near Pine Creek
|established=1966-02-25
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=541
|length_mi=10.691
|terminus_b=US 87/MT 3/MT 200 in Windham
|established=1966-11-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=542
|length_mi=
|terminus_a=
|terminus_b=
|established=1967
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=543
|length_mi=24.160
|terminus_b=Hell Creek State Park
|established=1967-02-14
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=544
|length_mi=32.937
|established=1968-04-22
|notes=none
}}
{{routelist row
|state=MT
|type=Sec 1945
|route=545
|length_mi=
|terminus_a=
|terminus_b=
|established=1968
|decommissioned=1974
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=546
|length_mi=
|terminus_a=
|terminus_b=
|established=1968
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=547
|length_mi=6.477
|terminus_b=Bear Springs Road near Denton
|established=1969-06-23
|notes=none
}}
{{routelist row
|state=MT
|type=Sec2
|route=548
|sortkey=Sec0548
|length_mi=6.521
|terminus_a=US 93 near Whitefish
|established=1969-09-02
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=549
|length_mi=
|terminus_a=
|terminus_b=
|established=1969
|decommissioned=1993
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=551
|length_mi=6.515
|terminus_a=US 87/MT 3/MT 200 in Geyser
|terminus_b=Braun Creek Road near Geyser
|established=1971-06-08
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=552
|length_mi=33.090
|terminus_b=S-343 near Whitlash
|established=1973-12-21
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=554
|length_mi=
|terminus_a=
|terminus_b=
|established=1971
|decommissioned=1977
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=556
|length_mi=44.200
|terminus_a=MT 200 near Snider
|terminus_b=US 2 near Happy's Inn
|established=1971-07-26
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=557
|length_mi=
|terminus_a=
|terminus_b=
|established=1971
|decommissioned=1974
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=558
|length_mi=
|terminus_a=
|terminus_b=
|established=1971
|decommissioned=1974
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=559
|length_mi=3.118
|terminus_a=US 93/MT 200 near Arlee
|terminus_b=Jocko Canyon Road near Arlee
|established=1973-05-07
|notes=none
}}
{{Routelist row
|state=MT
|type=Sec
|route=563
|length_mi=
|terminus_a=I-90 near Springdale
|terminus_b=Springdale
|established=1975
|decommissioned=2001
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=564
|length_mi=24.992
|established=1975-10-06
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=565
|length_mi=7.134
|terminus_b=US 89/S-441 near Fairfield
|established=1975-10-07
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=566
|length_mi=51.835
|terminus_a=S-314 near Tongue River Reservoir State Park
|established=1975-10-30
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=567
|length_mi=35.943
|established=1994-03-15
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=568
|length_mi=2.673
|terminus_a=I-94 near Pompeys Pillar
|terminus_b=Pompeys Pillar
|established=1976-07-06
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=569
|length_mi=22
|terminus_a=
|terminus_b=
|established=1976
|decommissioned=1981
|notes=
}}
{{routelist row
|state=MT
|type=Sec
|route=569
|length_mi=22.020
|terminus_a=MT 43 near Wise River
|terminus_b=MT 1 near Opportunity
|established=2001-03-29
|notes=Mt. Haggin scenic drive, formerly S-274
}}
{{Routelist row
|state=MT
|type=Sec
|route=570
|length_mi=
|terminus_a=S-205/S-411 in Bozeman
|terminus_b=I-90 in Bozeman
|established=2001
|decommissioned=2012
|circa_decommissined=yes
|notes=none
}}
{{routelist row
|state=MT
|type=Sec
|route=571
|length_mi=1.168
|terminus_b=S-540 near Emigrant
|established=2001-06-01
|notes=formerly S-362
}}
{{routelist row
|state=MT
|type=Sec
|route=572
|length_mi=1.750
|terminus_a=S-540 near Emigrant
|terminus_b=Chico Hot Springs
|established=2001-06-01
|notes=formerly S-542
}}
{{routelist row
|state=MT
|type=Sec
|route=573
|length_mi=14.870
|terminus_a=MT 16 in Medicine Lake
|terminus_b=Katy Lake
|established=2001-06-01
|notes=formerly part of S-515
}}
{{routelist row
|state=MT
|type=Sec
|route=574
|length_mi=10.970
|terminus_b=US 93/MT 200 near Wye
|established=2006-01-25
|notes=none
}}
{{routelist bottom|keys=former}}
Secondary Highway 206
{{Infobox road small
|state=MT
|type=Sec
|route=206
|length_mi=9.741
|established=1960
|location=Flathead County
}}
Secondary Highway 206 (S-206) is a {{convert|9.741|mi|km|adj=mid|-long}} secondary state highway in Flathead County, Montana connecting Montana Highway 35 (MT 35) east of Evergreen to U.S. Highway 2 (US 2) east of Columbia Falls.
S-206 begins at the junction with MT 35 and runs almost due north to its terminus with US 2 east of Columbia Falls, providing a rural bypass for traffic headed to Glacier National Park, Kalispell, Bigfork and Polson.
S-206 passes through mostly rural landscape, and wildlife crossings should be expected at all times as animals search for food and water.
Today's S-206 was part of the original 1926 US 2 corridor from Kalispell to Columbia Falls (along with MT 35 from the S-206 southern terminus to Evergreen). This two-lane paved road was initially built in 1934 and last improved in 2011 as listed in the state road log.
The S-206 designation has existed since at least 1960{{cite map |author = Montana State Highway Commission |url = http://www.mdt.mt.gov/other/mdtexrepo/maps/HWYMAP_1960_FT.PDF |title = State Highway Map |location = Helena |publisher = Montana State Highway Commission |year = 1960 |format = PDF |access-date = February 14, 2015 }} when S-206 was LaSalle Road, an {{convert|11.104|mi|km|adj=mid|-long}} four-lane highway that connected US 2 in Evergreen to MT 40 west of Columbia Falls and provides access to Glacier Park International Airport. It was route swapped from LaSalle Road in 1983 (as seen in the 1985 state map),{{cite map |url = http://www.mdt.mt.gov/other/mdtexrepo/maps/HWYMAP_85-86_FT.PDF |title = State Highway Map |author = Promotion Division |location = Helena |publisher = Montana Department of Transportation |year = 1985 |format = PDF |access-date = February 14, 2015 }} and the former routing is now part of US 2 from junction P-52 (MT 35) to junction N-38 (MT 40).
{{clear}}
Secondary Highway 232
{{Infobox road small
|state=MT
|type=Sec
|route=232
|length_mi=42.784
|length_ref={{MDT Road Log|page=258|access-date=February 13, 2017}}
|established={{circa|1945}}
|location=Hill County
}}
Secondary Highway 232 (S-232) is a {{convert|42.784|mi|km}} long secondary state highway in eastern Hill County connecting Havre and the Canadian border.
S-232 begins in the census-designated place (CDP) of Havre North, at Havre city limits, and travels north to S-233 at {{convert|3.316|mi|km}}. S-232 turns northwest where it terminates the Wild Horse Border Crossing at the Canadian border, continuing north as Alberta Highway 41 towards Medicine Hat.{{cite map |author = Montana Department of Transportation |title = Montana Official Highway Map |year = 2016 |scale = 1:633,600 |location = Helena |publisher = Montana Department of Transportation |sections = A3–B3, B4–D4, D5, D6–I6 }}
S-232 is a combined urban and secondary route, with Corridor C000232 comprises 7th Avenue and 5th Street North within Havre, connecting S-232 with U.S. Highway 2 (US 2).{{MDT Road Log|page=382|access-date=February 13, 2017}}
{{clear}}
Secondary Highway 317
{{Infobox road small
|state=MT
|type=Sec
|route=317
|length_mi=4.499
|location=Flathead County
}}
Secondary Highway 317 (S-317) is a {{convert|4.499|mi|km|adj=mid|-long}} secondary state highway in Flathead County, Montana, connecting Kalispell and Evergreen.
S-317 begins at the "Four Corners" junction with Cemetery Road to the west and U.S. Highway 93 (US 93) and Lower Valley Road south of the city limits of Kalispell. It proceeds north on Willow Glen Drive, then north and east on Conrad Drive along the Stillwater River, and north on Shady Lane to its terminus at State Highway 35 (MT 35). It is a de facto southeast bypass of downtown Kalispell for traffic headed to Evergreen and places such as Glacier National Park and Bigfork.
S-317 passes through mostly rural landscape outside the Kalispell city limits, and wildlife crossings should be expected at all times as animals go to the river for water and search for food.
S-317 is a paved two-lane highway entirely within the Kalispell urban area. As such, it is signed as a secondary route (corridor C000317) but listed as an urban route (U-6734) in the road log.
{{clear}}
Secondary Highway 323
{{Infobox road small
| state = MT
| type = Sec
| route = 323
| length_mi = 71.130
| established =
| location = Carter County
}}
File:Intersection of US 212 and SH-323 in Alzada, Montana.jpg in Alzada, April 2016.]]
Secondary Highway 323 (S‑323) is a {{convert|71.130|mi|km|adj=on}} secondary state highway in eastern Carter County, Montana, that connects Alzada and Ekalaka.
S‑323 begins at the U.S. Route 212 (US 212) in the unincorporated community of Alzada near the Montana-Wyoming state line. S‑323 travels north from Alzada through eastern Carter County. Secondary Highway 277 (Hammond Road) is intersected at {{convert|38.717|mi|km}} and Secondary Highway 328 (Tie Creek Road) at {{convert|48.018|mi|km}}. S‑323 enters and leaves the Custer National Forest between {{convert|63.576|mi|km}} and {{convert|66.304|mi|km}}, respectively. At {{convert|71.130|mi|km}} S‑323 reaches its northern terminus at the southern terminus of Montana Highway 7 in Ekalaka.{{citation needed|date=February 2018}}
S‑323 is a paved two-lane highway its entire length.{{citation needed|date=February 2018}}
{{clear left}}
Secondary Highway 326
{{Infobox road small
|state=MT
|type=Sec
|route=326
|map=
|length_mi=1.683
|established=
|location=Carter County
}}
Secondary Highway 326 (S-326) is a secondary state highway in the extreme south part of Carter County, Montana.
S-326 begins at Wyoming Highway 112 (WYO 112) at the Montana–Wyoming state line. Located here is a historical marker for Camp Devin. The highway then travels north {{convert|1.7|mi|km}} to end at US Route 212 (US 212) in Alzada.{{google maps |url= https://maps.google.com/maps?saddr=WY-112+N%2FN+Alzada+Rd%2FCo+Rd+2&daddr=Hwy+326&hl=en&sll=45.010994,-104.403677&sspn=0.058495,0.058193&geocode=FaydrgIdis7G-Q%3BFW77rgId0OHG-Q&vpsrc=0&mra=dme&mrsp=1&sz=14&t=m&z=14 |title= Overview Map of S-326 |link= no |access-date= September 13, 2011}}
{{clear}}
Secondary Highway 391
{{Infobox road small
|state=MT
|type=Sec
|route=391
|length_mi=
|length_ref=
|established=
|location=Powder River County
}}
Secondary Highway 391 (S-391) is a secondary state highway in the southern half of Powder River County, Montana, although it is a non-paved gravel road.
S-391 begins at the Montana–Wyoming state line in Powder River County. The gravel highway then travels north {{convert|36|mi|km}}{{citation needed|date=February 2015}} to an end at US Route 212 (US 212) in Broadus.
{{clear}}
Secondary Highway 419
{{Infobox road small
|state=MT
|type=Sec
|route=419
|length_mi=
|length_ref=
|established=
|location=Stillwater County
}}
Secondary Highway 419 (S-419) is a secondary state highway between Montana Highway 78 to the Stillwater Mining Company near Nye. The David Thatcher Memorial Highway is an {{convert|18|m|km|adj=on}} highway that begins at the intersection of MT 78 and MT 419 south of Absarokee and runs through Fishtail and Nye. It was named in honor of World War II veteran and Montana native Sergeant David Thatcher, who enlisted in the United States Army Air Corps in December 1940.{{cite magazine |last = Rodriquez |first = Ismael Jr. |title = Doolittle Raider Memorialized in Montana |work = VFW Magazine |publisher = Veterans of Foreign Wars |volume = 108 |issue = 5 |date = February 2021 |page = 46 }} Thatcher was one of the Doolittle Raiders and a recipient of the Silver Star. On March 20, 2019, Governor Steve Bullock signed into law Montana Senate Bill 175, which named the section of highway.
Secondary Highway 424
{{Infobox road small
|state=MT
|type=Sec
|route=424
|length_mi=17.108
|established=1930s
|location=Flathead County
}}
Secondary Highway 424 (S-424), also known as Three Mile Drive and Farm to Market Road, is a {{convert|17.108|mi|km|adj=mid|-long}} secondary state highway in Flathead County, Montana, connecting northwestern Kalispell to U.S. Route 93 (US 93) west of Whitefish.
S-424 begins at the junction of North Meridian Road and Three Mile Drive in Kalispell, just south of US 93 and just north of US 2. It follows Three Mile Drive west past the Kalispell Middle School to an interchange with the new US 93 Alternate before curving north and west as Farm to Market Road (subsuming sections of Springcreek Road and Four Mile Drive). S-424 proceeds mostly north from here, passing the West Valley Elementary School at the intersection with S-548, entering a forested area, going north on Lodgepole Road and then going east and north on Twin Bridges Road to its northern terminus at US 93 west of Whitefish, near Spencer Lake.
S-424 passes through mostly rural and forest landscape between Kalispell and Whitefish and wildlife crossings should be expected at all times as animals search for food and water.
S-424 is a paved two-lane road throughout. In the state road log, S-424 is a combined urban and secondary route, but is only currently signed outside the Kalispell city limits. Corridor C000424 comprises U-6706 (Three Mile Drive/Farm to Market Road) and S-424.
Farm to Market Road can be seen on the 1935 map as an all-weather gravel road.{{cite map |author = Montana State Highway Commission |url = http://www.mdt.mt.gov/other/mdtexrepo/maps/HWYMAP_1935_FT.PDF |title = State Highway Map |location = Helena |publisher = Montana State Highway Commission |year = 1935 |format = PDF |access-date = February 14, 2015 }}
The 1960 map was the first to use the S-424 route designation, where state highways were shown with square shields and the new numbered state roads (the secondary highways) were shown with oval shields.
Some map products still show the original S-424 routing, which continued on Farm to Market Road to the west terminus of, and including the entirety of, Twin Bridges Road. This routing provided access to Tally Lake Road and various U.S. Forest Service sites therein. The section of Farm to Market between Tally Lake and Twin Bridges Roads, even though paved, is much narrower and has more sudden curves than is preferred for modern driving. This prompted the route shift to Lodgepole Road between Farm to Market and Twin Bridges Roads. Lodgepole Road is a much wider county road built in 1956, and improved to paved state highway standards in 2003 expressly for this purpose.
Farm to Market Road continues north, providing access to the Twin Lakes area before intersecting with US 93 north of milepost 139.
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Secondary Highway 486
{{Infobox road small
|state = MT
|type = Sec
|route = 486
|length_mi = 22.646
|established = 1945
|location = Flathead County
}}
Secondary Highway 486 (S-486), also known as the North Fork Flathead Road (NFFR), is a {{convert|22.646|mi|km|adj=mid|-long}} secondary state highway in Flathead County, Montana, that connects the city of Columbia Falls with the Glacier National Park at Camas Road.
S-486 begins at the junction with U.S. Highway 2 (US 2) in Columbia Falls. It follows Nucleus Avenue north through downtown, turning northeast at Railroad Street (the truck route used by logging trucks coming from the north). It spends the next {{convert|21|mi|km}} winding its way through the Flathead National Forest until it reaches its officially signed terminus at Camas Road, which leads to the western entrance of Glacier National Park.
The highway passes through mostly forest landscape north of Columbia Falls, and wildlife crossings should be expected at all times as animals search for food and water.
S-486 is a two-lane road paved for the first {{convert|12.367|mi|km}} and mostly gravel the rest of the way. It is listed in the state road log as a combined urban and secondary route. Corridor C000486 comprises U-2501 (Nucleus Avenue/Railroad Street/North Fork Road) and S-486. The oldest section remaining in the current road was constructed by Flathead County in 1945, and the road has been signed as a state secondary highway since at least 1971.
Even though NFFR runs north from Columbia Falls to Canada, the S-486 designation (and the state funding that goes with it) currently stops at Camas Road. Flathead County is responsible for maintaining the gravel portion of S-486 and all construction and maintenance on the rest of the road that parallels the North Fork Flathead River to Polebridge (the northwestern entrance to Glacier National Park) and on to the Canadian border.{{cite web |url = http://www.mdt.mt.gov/pubinvolve/northfork/faqs.shtml |title = North Fork Flathead Road Corridor Study |publisher = Montana Department of Transportation |year = 2010 |access-date = February 11, 2015 }}
In August 2010, Flathead County and Montana Department of Transportation completed a study of the NFFR to evaluate corridor issues for the road such as dust pollution that carries into Glacier National Park. Because the NFFR is also Forest Highway 61, additional federal funding could be tapped for any reconstruction projects. With pending bridge replacement on US 2 near Hungry Horse scheduled for 2017, Columbia Falls city officials and residents are once again calling for paving the NFFR to Camas Road, at minimum, to give Glacier National Park visitors an alternate route to detour around the construction.
{{jcttop|state=MT|county=Flathead|length_ref=}}
{{MTint
|location=Columbia Falls
|mile=0.000
|road={{jct|state=MT|US|2|name1=Ninth Street}}
|notes=Southern terminus; S-486 heads north as Nucleus Avenue
}}
{{MTint
|location=none
|mile=22.646
|road=Camas Creek Road
|notes=Northern terminus; roadway continues north as North Fork Flathead Road
}}
{{jctbtm}}
Secondary Highway 487
{{Infobox road small
|state=MT
|type=Sec
|route=487
|length_mi=7.223
|established=1947
|location=Flathead County
}}
Secondary Highway 487 (S-487), also known as Big Mountain Road, is a {{convert|7.223|mi|km|adj=mid|-long}} secondary state highway in Flathead County, Montana connecting the city of Whitefish to the Whitefish Mountain Resort at Big Mountain.
S-487 begins at the junction with U.S. Highway 93 (US 93, 2nd Street) in Whitefish. It follows Baker Avenue, turning into Wisconsin Avenue when it crosses the BNSF railroad tracks west of the historic Amtrak station. S-487 turns west on Lakeshore Drive, before turning north onto Big Mountain Road and winding its way up to the Whitefish Mountain Resort at Big Mountain.
S-487 passes through mostly rural and forest landscape north of Whitefish, and wildlife crossings should be expected at all times as animals search for food and water.
S-487 is a paved two-lane road throughout, and is listed in the state road log as a combined urban and secondary route. Corridor C000487 comprises U-12001 (Baker Avenue/Wisconsin Avenue/Lakeshore Drive/Big Mountain Road) and S-487. Big Mountain Road was created in 1947 when the ski resort was established, and has been signed as a state secondary route since at least 1963.
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Secondary Highway 503
{{Infobox road small
|state=MT
|type=Sec
|route=503
|length_mi=12.166
|location=Flathead County
}}
Secondary Highway 503 (S-503) is a {{convert|12.166|mi|km|adj=mid|-long}} secondary state highway in Flathead County serving Foys Lake and Foys Canyon residents southwest of Kalispell.
S-503 begins at the junction with U.S. Highway 2 (US 2) and Meridian Road. It follows Meridian Road south to the southwest corner of the city limits of Kalispell. It meets the new US 93 Alternate at a roundabout, and proceeds west and southward on Foys Lake Road along Foys Lake and providing access to the Lone Pine State Park before heading southeast into Foys Canyon. S-503 turns north and emerges from the canyon at Rocky Cliff Drive and continues northward as Airport Road to its second roundabout with US 93 Alternate and passes the Kalispell city airport before reaching its terminus at US 93 and 13th Street East.
S-503 passes through mostly rural landscape outside the Kalispell city limits, and wildlife crossings should be expected at all times as animals search for food and water.
S-503 is now a paved two-lane road throughout, with the former gravel segment through Foys Canyon finally being reconstructed to paved state highway standards in 2002 to reduce dust pollution in the valley. In the state road log, S-503 is a combined urban and secondary route, but is only currently signed outside the Kalispell city limits. Corridor C000503 comprises U-6713 (Meridian Road), S-503, and U-6730 (Airport Road).
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Secondary Highway 508
{{Infobox road small
|state=MT
|type=Sec
|route=508
|length_mi=29.272
|length_ref={{MDT Road Log|page=349|access-date=August 20, 2015}}
|location=Lincoln County
}}
Secondary Highway 508 (S-508) is a secondary highway in far northwestern Montana. It begins at a junction with State Highway 37 (MT 37) and heads north-northeast to the town of Yaak where it ends at S-567. It is also known as Yaak River Road, and is located completely within Lincoln County.{{google maps |url= https://www.google.com/maps/place/Yaak,+Mt+59935/@48.833005,-115.7086591,17z/data=!3m1!4b1!4m2!3m1!1s0x53646bd810a56b0d:0xfad463e447c191a1 |title= Yaak, Mt 59935 |access-date=August 18, 2015}}
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Secondary Highway 537
{{Infobox road small
|state=MT
|type=Sec
|route=537
|length_mi=23.126
|length_ref={{MDT Road Log|page=235|access-date=May 14, 2016}}
|location=Valley County
}}
Secondary Highway 537 (S-537) is a secondary highway in northeast Montana. It begins at a junction with U.S. Highway 2 (US 2) and heads north out of the town of Hinsdale where it turns into Hinsdale North Road as it heads towards the Canadian Border. It is located completely within Valley County.
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Secondary Highway 548
{{Infobox road small
|state=MT
|type=Sec
|route=548
|length_mi=6.521
|location=Flathead County
}}
Secondary Highway 548 (S-548), also known as West Reserve Drive and Old Reserve Drive, is a {{convert|6.521|mi|km|adj=mid|-long}} secondary state highway in Flathead County, Montana connecting S-424 across the northern rural areas of Kalispell to U.S. Highway 2 (US 2) in Evergreen.
S-548 begins at the junction with S-424 and McMannamy Draw. It proceeds east as Old Reserve Drive across rolling and flat terrain. It reaches Stillwater Road and passes Glacier High School before meeting the new US 93 Alternate and joining it for its last half mile (0.8 km) to US 93. Now under its original name, West Reserve Drive, S-548 proceeds east across the Stillwater River, intersects with Whitefish Stage Road, descends a hill, and crosses the Whitefish River before reaching its terminus at US 2 in Evergreen.
S-548 passes through mostly rural landscape outside the Kalispell city limits, and wildlife crossings should be expected at all times as animals search for food and water.
Prior to the realignment caused by the US 93 Alt. construction, S-548 was known throughout as West Reserve Drive, based on Evergreen's east/west divider at LaSalle Road (today's US 2).
S-548 is a paved two-lane road throughout, except for the four-lane segment where it is overlaid on US 93 Alt. and across US 93 east to Hutton Ranch Road. In the state road log, S-548 is a combined urban and secondary route. Corridor C000548 comprises S-548 and U-6737 (West Reserve Drive/Old Reserve Drive/Reserve Place).
Past US 2, East Reserve Drive (urban route U-6708) extends another {{convert|1.001|mi|km}} to Helena Flats Road (U-6712) before coming totally under county construction, funding, and maintenance. East Reserve and Helena Flats provide a de facto rural bypass from north Evergreen, connecting the terminus of S-548 east and south to Montana Highway 35 (MT 35).
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See also
- {{portal-inline|U.S. Roads}}