List of state routes in Washington
{{Short description|None}}
{{Use mdy dates|date=January 2025}}
{{Infobox state highway system
|title=State Routes in Washington
|shields={{infobox road/shieldmain/USA|state=WA|type=SR|route=4}} {{infobox road/shieldmain/USA|state=WA|type=SR|route=27}} {{infobox road/shieldmain/USA|state=WA|type=SR|route=520}}
|caption=Highway markers for State Route 4, State Route 27, and State Route 520
|map=Washington state highways.svg
|map_notes=The state highway system of Washington
|formed=1964
|length_mi=7054.96
|statehwy=State Route nn (SR nn)
|label1=Spur Routes:
|field1=State Route nn Spur (SR nn Spur)
|interstate=Interstate X (I-X)
|us=U.S. Route X (US X)
|notes=Maintained by WSDOT
|links=WA
}}
The U.S. state of Washington has over {{convert|7,000|mi|km}} of state highways maintained by the Washington State Department of Transportation (WSDOT).{{WSDOT State Highway Log |year=2017 |link=yes |accessdate=July 5, 2018}} The highway system is defined through acts by the state legislature and is encoded in the Revised Code of Washington as State Routes (SR). It was created in 1964 to replace an earlier numbering scheme and ratified by the state legislature in 1970. The system's 196 highways are almost entirely paved, with the exception of a gravel section on SR 165.
The state's Interstate and U.S. Highways are also defined as part of the state route system, but are omitted from this list.
__TOC__
{{Clear}}
State routes
{{Routelist top|length_ref=|established_ref={{cite web |title=Chapter 47.17: State Highway Routes |url=https://apps.leg.wa.gov/rcw/default.aspx?Cite=47.17&full=true |work=Revised Code of Washington |publisher=Washington State Legislature |accessdate=November 23, 2022}}}}
{{routelist row
|state=WA
|type=SR
|route=3
|length_mi=59.81
|terminus_b=SR 104 near Port Gamble
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=4
|length_mi=62.27
|terminus_a=US 101 at Johnston's Landing
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=6
|length_mi=51.37
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=7
|length_mi=58.26
|terminus_b=I-5/I-705 in Tacoma
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=8
|length_mi=20.67
|terminus_b=US 101 near Olympia
|established=1967
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=8
|dab=1964
|length_mi=
|length_ref=
|terminus_b=I-5 at Grand Mound
|established=1964
|established_ref=
|decommissioned=1967
|decommissioned_ref=
|notes=Replaced by US 12, number re-assigned to former US 410
}}
{{routelist row
|state=WA
|type=SR
|route=9
|length_mi=97.35
|terminus_a=SR 522 near Woodinville
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=10
|length_mi=16.16
|terminus_a=SR 970 in Teanaway
|terminus_b=US 97 near Ellensburg
|established=1970
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=11
|length_mi=21.30
|terminus_a=I-5 in Burlington
|terminus_b=I-5 in Bellingham
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=12
|dab=1964
|length_mi=
|length_ref=
|terminus_a=US 97/US 830 near Maryhill
|terminus_b=US 410 near Kennewick
|established=1964
|established_ref=
|decommissioned=1967
|decommissioned_ref=
|notes=Replaced by SR 14, number reassigned to US 12
}}
{{routelist row
|state=WA
|type=SR
|route=14
|length_mi=180.66
|terminus_b=I-82/US 395 near Plymouth
|established=1968
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=14
|dab=1964
|length_mi=
|length_ref=
|established=1964
|established_ref=
|decommissioned=1967
|decommissioned_ref=
|notes=Replaced by US 12
}}
{{routelist row
|state=WA
|type=SR
|route=16
|length_mi=27.16
|established=1964
|established_ref=
|notes=Signed east–west
}}
{{routelist row
|state=WA
|type=SR
|route=17
|length_mi=136.67
|terminus_b=US 97 near Brewster
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=18
|length_mi=28.41
|terminus_a=SR 99 in Federal Way
|terminus_b=I-90 near North Bend
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=19
|length_mi=14.09
|terminus_a=SR 104 near Port Ludlow
|terminus_b=SR 20 near Port Townsend
|established=1992
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=20
|length_mi=436.13
|terminus_a=US 101 at Discovery Bay
|established=1964
|established_ref=
|notes=Longest state highway in Washington
}}
{{routelist row
|state=WA
|type=SR
|route=21
|length_mi=191.29
|terminus_a=SR 260 in Kahlotus
|terminus_b=BC Hwy 41 at Canada–US border in Danville
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=22
|length_mi=35.84
|terminus_a=I-82/US 12 near Zillah
|terminus_b=I-82/US 12 in Prosser
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=23
|length_mi=66.00
|terminus_a=US 195 near Steptoe
|terminus_b=SR 28 in Harrington
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=24
|length_mi=79.23
|terminus_a=I-82/US 12/US 97 in Yakima
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=25
|length_mi=121.17
|terminus_b=BC Hwy 22 at Canada–US border
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=26
|length_mi=133.61
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=27
|length_mi=90.00
|terminus_a=US 195 near Pullman
|terminus_b=SR 290 in Spokane Valley
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=28
|length_mi=135.25
|terminus_a=US 2/US 97 in East Wenatchee
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=30
|length_mi=
|terminus_b=US 395 near Kettle Falls
|established=1964
|established_ref=
|decommissioned=1973
|notes=Replaced by SR 20
}}
{{routelist row
|state=WA
|type=SR
|route=31
|length_mi=26.79
|terminus_b=BC Hwy 6 at Canada–US border
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=35
|length_mi=
|terminus_a=OR 35 at Hood River
|terminus_b=SR 14 in White Salmon
|established=proposed
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=41
|length_mi=0.41
|established=1997
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=92
|length_mi=9.16
|terminus_a=SR 9 in Lake Stevens
|terminus_b=Mountain Loop Highway in Granite Falls
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=96
|length_mi=6.75
|terminus_b=SR 9 near Cathcart
|established=1992
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=99
|length_mi=49.13
|terminus_b=I-5/SR 526/SR 527 in Everett
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=100
|length_mi=4.68
|established=1992
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=102
|length_mi=2.86
|terminus_a=Washington Corrections Center
|terminus_b=US 101 near Shelton
|established=1984
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=103
|length_mi=19.97
|terminus_b=Leadbetter Point State Park
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=104
|length_mi=31.75
|terminus_a=US 101 near Discovery Bay
|terminus_b=SR 522 in Lake Forest Park
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=105
|length_mi=48.57
|terminus_b=US 101 in Aberdeen
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=106
|length_mi=20.09
|terminus_a=US 101 in Skokomish
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=107
|length_mi=7.93
|terminus_a=US 101 near Cosmopolis
|terminus_b=US 12 in Montesano
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=108
|length_mi=11.96
|terminus_b=US 101 in Kamilche
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=109
|length_mi=40.50
|terminus_b=Quinault Street in Taholah
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=110
|length_mi=11.10
|terminus_a=Olympic National Park near La Push
|established=1992
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=110
|dab=1967
|length_mi=
|terminus_a=SR 11 in Bellingham
|terminus_b=I-5 in Bellingham
|established=1967
|established_ref=
|decommissioned=1975
|notes=Replaced by SR 11
}}
{{routelist row
|state=WA
|type=SR
|route=111
|length_mi=
|terminus_a=Hurricane Ridge in Olympic National Park
|terminus_b=US 101 in Port Angeles
|established=1964
|established_ref=
|decommissioned=1971
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=112
|length_mi=61.31
|terminus_a=Makah Indian Reservation near Neah Bay
|terminus_b=US 101 near Port Angeles
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=113
|length_mi=9.98
|terminus_b=SR 112 near Clallam Bay
|established=1992
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=113
|dab=1964
|length_mi=
|terminus_a=US 101 at Discovery Bay
|terminus_b=SR 525 near Coupeville
|established=1964
|established_ref=
|decommissioned=1973
|notes=Replaced by SR 20
}}
{{routelist row
|state=WA
|type=SR
|route=115
|length_mi=2.28
|terminus_a=Point Brown Avenue in Ocean Shores
|terminus_b=SR 109
|established=1973
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=116
|length_mi=9.83
|terminus_b=Fort Flagler State Park
|established=1992
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=117
|length_mi=1.40
|terminus_a=US 101 in Port Angeles
|terminus_b=Marine Drive in Port Angeles
|established=1992
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=119
|length_mi=10.93
|terminus_a=US 101 in Hoodsport
|terminus_b=FH 24 near Lake Cushman
|established=1992
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=120
|length_mi=
|terminus_a=US 830 in Washougal
|established=1964
|established_ref=
|decommissioned=1967
|decommissioned_ref=
|notes=Replaced by SR 140
}}
{{routelist row
|state=WA
|type=SR
|route=121
|length_mi=7.67
|established=1967
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=121
|dab=1964
|length_mi=
|terminus_b=FR 24 near Trout Lake
|established=1964
|established_ref=
|decommissioned=1967
|decommissioned_ref=
|notes=Replaced by SR 141
}}
{{routelist row
|state=WA
|type=SR
|route=122
|length_mi=7.88
|terminus_a=US 12 in Silver Creek
|terminus_b=US 12 in Mossyrock
|established=1992
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=122
|dab=1964
|length_mi=
|terminus_b=US 97 in Goldendale
|established=1964
|established_ref=
|decommissioned=1967
|decommissioned_ref=
|notes=Replaced by SR 142
}}
{{routelist row
|state=WA
|type=SR
|route=123
|length_mi=16.36
|terminus_a=US 12 near Packwood
|terminus_b=SR 410 near Mount Rainier
|established=1967
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=124
|length_mi=44.72
|terminus_b=US 12 in Waitsburg
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=125
|length_mi=23.65
|terminus_a=OR 11 near Walla Walla
|terminus_b=SR 124 near Prescott
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=126
|length_mi=
|terminus_b=US 12 near Pomeroy
|established=1964
|established_ref=
|decommissioned=1992
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=127
|length_mi=27.05
|terminus_a=US 12 near Pomeroy
|established=1970
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=128
|length_mi=2.24
|terminus_a=US 12 in Clarkston
|terminus_b=ID 128 near Clarkston
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=129
|length_mi=42.55
|terminus_b=US 12 in Clarkston
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=131
|length_mi=2.07
|terminus_a=FR 25 near Randle
|established=1992
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=131
|dab=1964
|length_mi=
|terminus_a=US 10/US 97 near Ellensburg
|established=1964
|established_ref=
|decommissioned=1975
|notes=Replaced by US 97
}}
{{routelist row
|state=WA
|type=SR
|route=140
|length_mi=
|terminus_a=SR 14 in Washougal
|established=1968
|established_ref=
|decommissioned=1992
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=141
|length_mi=29.25
|terminus_b=FR 24 near Trout Lake
|established=1968
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=141
|dab=1964
|length_mi=
|established=1964
|established_ref=
|decommissioned=1967
|decommissioned_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=142
|length_mi=35.24
|terminus_b=US 97 in Goldendale
|established=1968
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=143
|dab=1964
|length_mi=
|terminus_a=SR 14 near Packwood
|terminus_b=US 410 at Cayuse Pass
|established=1964
|established_ref=
|decommissioned=1967
|decommissioned_ref=
|notes=Replaced by SR 123
}}
{{routelist row
|state=WA
|type=SR
|route=143
|dab=1973
|length_mi=
|terminus_b=Umatilla Bridge
|established=1973
|established_ref=
|decommissioned=1985
|notes=Replaced by I-82
}}
{{routelist row
|state=WA
|type=SR
|route=150
|length_mi=11.76
|terminus_a=Wapato Point Parkway in Manson
|terminus_b=US 97 near Chelan Falls
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=151
|length_mi=
|established=1964
|established_ref=
|decommissioned=1987
|notes=Replaced by US 97
}}
{{routelist row
|state=WA
|type=SR
|route=153
|length_mi=30.78
|terminus_a=US 97 near Pateros
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=155
|length_mi=78.35
|terminus_a=US 2 near Coulee City
|terminus_b=US 97/SR 20 in Omak
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=160
|length_mi=7.47
|terminus_a=SR 16 in Port Orchard
|terminus_b=Fauntleroy ferry terminal in Seattle
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=161
|length_mi=36.25
|terminus_a=SR 7 near Eatonville
|terminus_b=SR 18 in Federal Way
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=162
|length_mi=17.37
|terminus_b=SR 165 near Buckley
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=163
|length_mi=3.37
|terminus_b=Tahlequah ferry terminal in Vashon
|established=1991
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=163
|dab=1964
|length_mi=
|established=1964
|established_ref=
|decommissioned=1969
|decommissioned_ref=
|notes=Replaced by SR 167
}}
{{routelist row
|state=WA
|type=SR
|route=164
|length_mi=14.82
|terminus_b=SR 410 in Enumclaw
|established=1969
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=165
|length_mi=21.18
|terminus_a=Mowich Lake Road near Mowich Lake
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=166
|length_mi=5.13
|terminus_a=SR 16 near Port Orchard
|terminus_b=Whitter Avenue in Port Orchard
|established=1993
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=167
|length_mi=28.60
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=168
|length_mi=
|terminus_a=SR 410 near Greenwater
|terminus_b=SR 410 near Cliffdell
|established=proposed
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=169
|length_mi=25.26
|terminus_a=SR 164 in Enumclaw
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=170
|length_mi=3.66
|terminus_b=South Main Street in Warden
|established=1970
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=170
|dab=1965
|length_mi=
|terminus_a=Ringold River Road near Basin City
|established=1965
|established_ref=
|decommissioned=1967
|decommissioned_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=171
|length_mi=3.79
|terminus_a=I-90 in Moses Lake
|terminus_b=SR 17 in Moses Lake
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=172
|length_mi=35.01
|terminus_b=SR 17 near Mansfield
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=173
|length_mi=11.86
|terminus_a=SR 17 in Bridgeport
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=174
|length_mi=40.66
|terminus_a=SR 17 in Leahy
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=181
|length_mi=6.05
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=193
|length_mi=2.58
|terminus_a=SR 128 near Clarkston
|terminus_b=Wawawai Road near Clarkston
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=194
|length_mi=21.01
|terminus_a=Almota Road in Almota
|terminus_b=US 195 near Pullman
|established=1991
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=202
|length_mi=30.58
|terminus_a=SR 522 in Woodinville
|terminus_b=I-90 in North Bend
|established=1970
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=202
|dab=1964
|length_mi=
|terminus_a=SR 522 near Bothell
|established=1964
|established_ref=
|decommissioned=1970
|decommissioned_ref=
|notes=Replaced by SR 522
}}
{{routelist row
|state=WA
|type=SR
|route=203
|length_mi=24.26
|terminus_a=SR 202 in Fall City
|established=1970
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=204
|length_mi=2.38
|terminus_b=SR 9 in Lake Stevens
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=206
|length_mi=15.30
|terminus_b=Mount Spokane State Park
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=207
|length_mi=4.38
|terminus_a=US 2 at Coles Corner
|terminus_b=Lake Wenatchee State Park
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=209
|length_mi=
|terminus_a=US 2 near Leavenworth
|terminus_b=Lake Wenatchee State Park
|established=1964
|established_ref=
|decommissioned=1992
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=211
|length_mi=15.18
|terminus_a=US 2 near Diamond Lake
|established=1975
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=213
|length_mi=0.35
|terminus_b=First Avenue in Malott
|established=2008
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=215
|length_mi=6.24
|terminus_b=US 97/SR 20 in Omak
|established=1973
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=220
|length_mi=27.42
|terminus_a=Fort Simcoe State Park
|terminus_b=SR 22 in Toppenish
|established=1964
|established_ref=
|decommissioned=1992
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=221
|length_mi=25.95
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=223
|length_mi=3.80
|terminus_a=SR 22 near Toppenish
|terminus_b=I-82/US 12 in Granger
|established=1967
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=224
|length_mi=10.15
|terminus_a=I-82/US 12 in Benton City
|terminus_b=SR 240 in Richland
|established=1965
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=225
|length_mi=11.33
|terminus_b=SR 240 at Horn Rapids Dam
|established=1991
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=230
|length_mi=
|terminus_a=I-90/US 395 in Ritzville
|established=proposed
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=231
|length_mi=74.97
|terminus_a=SR 23 near Sprague
|terminus_b=US 395 near Chewelah
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=232
|length_mi=
|terminus_a=SR 231 near Valley
|terminus_b=US 395 near Valley
|established=1967
|established_ref=
|decommissioned=1991
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=237
|length_mi=
|established=1975
|established_ref=
|decommissioned=1991
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=240
|length_mi=41.31
|terminus_a=SR 24 near Hanford Reservation
|terminus_b=US 395 in Kennewick
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=241
|length_mi=25.18
|terminus_b=SR 24 near Hanford Reservation
|established=1967
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=243
|length_mi=28.23
|terminus_a=SR 24 near Desert Aire
|terminus_b=SR 26 near Vantage
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=251
|length_mi=
|terminus_a=SR 25 in Northport
|terminus_b=BC Hwy 22A at the Canada–US border
|established=1964
|established_ref=
|decommissioned=1983
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=260
|length_mi=37.98
|terminus_a=SR 17 near Connell
|terminus_b=SR 26/SR 261 in Washtucna
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=261
|length_mi=62.71
|terminus_a=US 12 near Starbuck
|terminus_b=I-90/US 395 in Ritzville
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=262
|length_mi=24.22
|terminus_a=SR 26 near Othello
|established=1991
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=263
|length_mi=9.24
|terminus_a=Port of Windust
|terminus_b=SR 260 in Kahlotus
|established=1991
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=270
|length_mi=9.89
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=271
|length_mi=8.48
|terminus_a=SR 27 near Oakesdale
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=272
|length_mi=19.22
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=274
|length_mi=1.92
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=276
|length_mi=
|terminus_a=US 195 near Pullman
|terminus_b=SR 270 near Pullman
|established=1973
|established_ref=
|decommissioned=2016
|notes=Never built
}}
{{routelist row
|state=WA
|type=SR
|route=278
|length_mi=5.50
|terminus_b=ID 58 near Rockford
|established=1991
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=281
|length_mi=10.55
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=282
|length_mi=4.92
|terminus_b=SR 17 near Ephrata
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=283
|length_mi=14.86
|terminus_a=SR 281 Spur near George
|terminus_b=SR 28 near Ephrata
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=285
|length_mi=5.04
|terminus_a=SR 28 in East Wenatchee
|terminus_b=US 2/US 97 in Sunnyslope
|established=1977
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=290
|length_mi=18.31
|terminus_b=ID 53 at State Line
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=291
|length_mi=33.09
|terminus_a=US 2/US 395 in Spokane
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=292
|length_mi=5.91
|terminus_a=SR 231 in Springdale
|terminus_b=US 395 in Loon Lake
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=294
|length_mi=
|terminus_a=US 395 in Colville
|established=1964
|established_ref=
|decommissioned=1973
|notes=Replaced by SR 20
}}
{{routelist row
|state=WA
|type=SR
|route=300
|length_mi=3.35
|terminus_a=Belfair State Park
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=302
|length_mi=16.87
|terminus_b=SR 16 in Gig Harbor
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=303
|length_mi=9.27
|terminus_a=SR 304 in Bremerton
|terminus_b=SR 3 in Silverdale
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=304
|length_mi=3.14
|terminus_a=SR 3 in Navy Yard City
|terminus_b=Colman Dock ferry terminal in Seattle
|established=1964
|established_ref=
|notes=Deleted between 1991 and 1994
}}
{{routelist row
|state=WA
|type=SR
|route=305
|length_mi=13.50
|terminus_a=Colman Dock ferry terminal in Seattle
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=306
|length_mi=
|terminus_a=SR 303 in Bremerton
|terminus_b=Illahee State Park
|established=1964
|established_ref=
|decommissioned=1993
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=307
|length_mi=5.25
|terminus_b=SR 104 near Kingston
|established=1991
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=308
|length_mi=3.42
|terminus_b=Naval Undersea Warfare Center in Keyport
|established=1971
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=310
|length_mi=1.84
|terminus_b=SR 304 in Bremerton
|established=1991
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=311
|length_mi=
|terminus_a=US 2 near Diamond Lake
|established=1964
|established_ref=
|decommissioned=1975
|notes=Replaced by SR 211
}}
{{routelist row
|state=WA
|type=SR
|route=339
|length_mi=9.8
|terminus_a=Vashon ferry terminal
|terminus_b=Colman Dock ferry terminal in Seattle
|established=1994
|established_ref=
|notes=Passenger-only ferry route
}}
{{routelist row
|state=WA
|type=SR
|route=397
|length_mi=22.31
|terminus_a=I-82/US 395 near Finley
|terminus_b=I-182/US 12/US 395 in Pasco
|established=1992
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=401
|length_mi=12.13
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=402
|length_mi=
|terminus_a=SR 4 in Grays River
|established=1964
|established_ref=
|decommissioned=1971
|notes=Never built proposal
}}
{{routelist row
|state=WA
|type=SR
|route=403
|length_mi=
|terminus_a=Altoona
|established=1964
|established_ref=
|decommissioned=1992
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=407
|length_mi=
|terminus_b=Elochoman State Forest
|established=1964
|established_ref=
|decommissioned=1992
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=409
|length_mi=3.84
|terminus_a=Wahkiakum County ferry terminal on Puget Island
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=410
|length_mi=107.44
|established=1967
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=411
|length_mi=13.48
|terminus_a=SR 432 in Longview
|terminus_b=I-5/SR 504 in Castle Rock
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=431
|length_mi=
|established=1968
|established_ref=
|decommissioned=1992
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=432
|length_mi=10.32
|terminus_a=SR 4 in West Longview
|established=1968
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=433
|length_mi=0.94
|terminus_a=Lewis and Clark Bridge
|terminus_b=SR 432 in Longview
|established=1968
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=500
|length_mi=22.64
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=501
|length_mi=12.70
|terminus_b=I-5 in Ridgefield
|established=1964
|established_ref=
|notes=Divided into two sections
}}
{{routelist row
|state=WA
|type=SR
|route=502
|length_mi=6.12
|terminus_a=I-5 near Mount Vista
|terminus_b=SR 503 in Battle Ground
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=503
|length_mi=54.11
|terminus_a=SR 500 in Orchards
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=504
|length_mi=51.76
|terminus_a=I-5/SR 411 in Castle Rock
|terminus_b=Mount St. Helens National Volcanic Monument
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=505
|length_mi=19.29
|terminus_a=Kerron Street in Winlock
|terminus_b=SR 504 near Toutle
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=506
|length_mi=11.53
|terminus_a=2nd Street in Ryderwood
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=507
|length_mi=43.88
|terminus_a=I-5/US 12 in Centralia
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=508
|length_mi=32.84
|terminus_a=I-5/US 12 in Napavine
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=509
|length_mi=35.17
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=510
|length_mi=13.10
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=512
|length_mi=12.06
|terminus_b=SR 161/SR 167 in Puyallup
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=513
|length_mi=3.35
|terminus_b=Magnuson Park in Seattle
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=514
|length_mi=
|terminus_b=SR 161 in Edgewood
|established=1964
|established_ref=
|decommissioned=1992
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=515
|length_mi=7.86
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=516
|length_mi=16.49
|terminus_a=SR 509 in Des Moines
|terminus_b=SR 169 in Maple Valley
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=518
|length_mi=3.42
|terminus_b=I-5/I-405 in Tukwila
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=519
|length_mi=1.14
|terminus_b=Colman Dock ferry terminal in Seattle
|established=1991
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=520
|length_mi=12.82
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=522
|length_mi=24.64
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=523
|length_mi=2.45
|terminus_a=SR 99 in Seattle/Shoreline
|terminus_b=SR 522 in Lake Forest Park/Shoreline
|established=1991
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=524
|length_mi=14.68
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=525
|length_mi=30.68
|terminus_a=I-5/I-405 in Lynnwood
|terminus_b=SR 20 near Coupeville
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=526
|length_mi=4.52
|terminus_a=SR 525 in Mukilteo
|terminus_b=I-5/SR 99/SR 527 in Everett
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=527
|length_mi=9.29
|terminus_b=I-5/SR 99/SR 526 in Everett
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=528
|length_mi=3.46
|terminus_a=I-5 in Marysville
|terminus_b=SR 9 in Marysville
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=529
|length_mi=7.88
|terminus_b=SR 528 in Marysville
|established=1971
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=530
|length_mi=50.45
|terminus_a=I-5 near Arlington
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=531
|length_mi=9.88
|terminus_a=Wenberg County Park near Lake Goodwin
|established=1991
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=532
|length_mi=10.09
|terminus_a=Sunrise Boulevard on Camano Island
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=534
|length_mi=5.08
|terminus_b=SR 9 in Lake McMurray
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=536
|length_mi=5.38
|terminus_a=SR 20 near Mount Vernon
|terminus_b=I-5 in Mount Vernon
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=537
|length_mi=
|terminus_a=SR 536 in Fredonia
|established=1964
|established_ref=
|decommissioned=1975
|notes=Replaced by SR 237
}}
{{routelist row
|state=WA
|type=SR
|route=538
|length_mi=3.61
|terminus_a=I-5 in Mount Vernon
|terminus_b=SR 9 near Big Lake
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=539
|length_mi=15.18
|terminus_a=I-5 in Bellingham
|terminus_b=BC Hwy 13 at Canada–US border near Lynden
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=540
|length_mi=
|terminus_a=Lummi Indian Reservation
|established=1964
|established_ref=
|decommissioned=1984
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=542
|length_mi=57.29
|terminus_a=I-5 in Bellingham
|terminus_b=Mount Baker Ski Area
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=543
|length_mi=1.09
|terminus_b=BC Hwy 15 at Canada–US border in Blaine
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=544
|length_mi=8.94
|terminus_a=SR 539 near Lynden
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=546
|length_mi=8.02
|terminus_a=SR 539 near Lynden
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=547
|length_mi=10.72
|established=1984
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=548
|length_mi=13.85
|established=1991
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=599
|length_mi=1.75
|established=1971
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=603
|length_mi=
|terminus_b=SR 6 near Chehalis
|established=1964
|established_ref=
|decommissioned=1992
|notes=Replaced by SR 505
}}
{{routelist row
|state=WA
|type=SR
|route=702
|length_mi=9.32
|terminus_b=SR 7 near Eatonville
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=704
|length_mi=0.63
|terminus_a=Spanaway Loop Road in Spanaway
|established=2002
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=706
|length_mi=13.64
|terminus_b=Longmire in Mount Rainier National Park
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=801
|length_mi=
|established=1964
|established_ref=
|decommissioned=1967
|decommissioned_ref=
|notes=Replaced by SR 121
}}
{{routelist row
|state=WA
|type=SR
|route=821
|length_mi=25.21
|terminus_a=I-82/US 97 in Selah
|terminus_b=I-82/US 97 near Ellensburg
|established=1973
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=823
|length_mi=5.56
|terminus_a=I-82/US 97 in Selah
|established=1984
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=831
|length_mi=
|established=1964
|established_ref=
|decommissioned=1967
|decommissioned_ref=
|notes=Replaced by SR 431
}}
{{routelist row
|state=WA
|type=SR
|route=832
|length_mi=
|terminus_a=US 830 in West Longview
|established=1964
|established_ref=
|decommissioned=1967
|decommissioned_ref=
|notes=Replaced by SR 432
}}
{{routelist row
|state=WA
|type=SR
|route=833
|length_mi=
|terminus_a=Lewis and Clark Bridge
|terminus_b=SR 832 in Longview
|established=1964
|established_ref=
|decommissioned=1967
|decommissioned_ref=
|notes=Replaced by SR 433
}}
{{routelist row
|state=WA
|type=SR
|route=900
|length_mi=16.20
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=901
|length_mi=
|established=1964
|established_ref=
|decommissioned=1992
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=902
|length_mi=12.36
|terminus_a=I-90/US 395 near Medical Lake
|terminus_b=I-90/US 395 near Medical Lake
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=903
|length_mi=10.06
|terminus_a=SR 970 near Cle Elum
|terminus_b=Wenatchee National Forest near Lake Cle Elum
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=904
|length_mi=16.96
|terminus_a=I-90/US 395 in Tyler
|terminus_b=I-90/US 395 in Four Lakes
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=906
|length_mi=2.65
|terminus_a=I-90 at Snoqualmie Pass
|established=1967
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=908
|length_mi=
|established=1971
|established_ref=
|decommissioned=2010
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=920
|length_mi=
|established=1975
|established_ref=
|decommissioned=1985
|notes=Replaced by SR 520
}}
{{routelist row
|state=WA
|type=SR
|route=970
|length_mi=10.31
|established=1975
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR
|route=971
|length_mi=15.02
|terminus_a=US 97 Alt near Entiat
|terminus_b=US 97 Alt near Chelan
|established=1991
|established_ref=
|notes=none
}}
{{Routelist bottom|keys=former,proposed}}
Special routes
WSDOT does not maintain business routes, which are instead created and signed by local jurisdictions.{{cite web |date=May 2021 |title=WSDOT Traffic Manual, Chapter 2: Signs |page={{not a typo|2-52}} |url=https://www.wsdot.wa.gov/publications/manuals/fulltext/M51-02/Chapter2.pdf |publisher=Washington State Department of Transportation |accessdate=September 10, 2021}}
{{routelist row
|state=WA
|type=SR-Spur
|route=9
|length_mi=0.24
|terminus_b=Canada–US border in Sumas
|established=
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR-Spur
|route=14
|length_mi=0.39
|established=
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR-Bus
|route=14
|length_mi=
|terminus_b=SR 14 near Washougal
|established=
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR-Alt
|route=16
|length_mi=0.68
|beltway=Serves Tacoma Narrows Bridge toll plaza
|established=2007
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR-Spur
|route=16
|length_mi=0.39
|established=1988
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR-Spur
|route=20
|length_mi=7.78
|terminus_a=SR 20 near Anacortes
|terminus_b=San Juan Islands ferry
|established=
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR-Bus
|route=20
|length_mi=
|terminus_a=
|terminus_b=
|established=1964
|established_ref=
|decommissioned=1973
|decommissioned_ref=
|notes=Replaced by SR 215
}}
{{routelist row
|state=WA
|type=SR-Spur
|route=26
|length_mi=0.07
|established=
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR-Spur
|route=28
|length_mi=0.76
|terminus_a=SR 285 in East Wenatchee
|terminus_b=SR 28 in East Wenatchee
|established=
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR-Spur
|route=92
|length_mi=0.08
|terminus_a=SR 92 in Granite Falls
|terminus_b=Granite Falls
|established=
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR-Spur
|route=100
|length_mi=0.08
|terminus_a=SR 100 near Fort Canby
|terminus_b=Cape Disappointment State Park
|established=1991
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR-Spur
|route=104
|length_mi=0.34
|terminus_a=SR 99 in Edmonds/Shoreline
|terminus_b=SR 104 in Edmonds/Shoreline
|established=
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR-Spur
|route=105
|dab=Aberdeen
|length_mi=0.15
|terminus_a=SR 105 in Aberdeen
|terminus_b=US 101 in Aberdeen
|established=
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR-Spur
|route=105
|dab=Westport
|length_mi=4.02
|terminus_a=SR 105 at Twin Harbors State Park
|terminus_b=Westhaven Drive in Westport
|established=
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR-Bus
|route=108
|length_mi=
|terminus_a=SR 108 near McCleary
|terminus_b=SR 108 in McCleary
|established=
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR-Spur
|route=109
|length_mi=1.82
|established=
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR-Spur
|route=110
|length_mi=2.67
|terminus_a=Olympic National Park boundary near Mora
|terminus_b=SR 110 near Mora
|established=
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR-Spur
|route=125
|length_mi=0.73
|terminus_a=US 12 in Walla Walla
|terminus_b=SR 125 in Walla Walla
|established=
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR-Spur
|route=129
|length_mi=0.25
|terminus_a=SR 129 in Clarkston
|terminus_b=US 12 in Clarkston
|established=
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR-Spur
|route=141
|length_mi=2.16
|terminus_a=SR 14 in Underwood
|terminus_b=SR 141 near White Salmon
|established=
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR-Spur
|route=151
|length_mi=
|terminus_a=SR 151 near Chelan
|established=1964
|established_ref=
|decommissioned=1987
|decommissioned_ref=
|notes=Replaced by US 97
}}
{{routelist row
|state=WA
|type=SR-Spur
|route=155
|length_mi=0.37
|established=
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR-Spur
|route=174
|dab=Crown Point
|length_mi=1.37
|terminus_a=SR 174 near Grand Coulee
|terminus_b=Crown Point Vista at Steamboat Rock State Park
|established=1964
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR-Spur
|route=174
|dab=Leahy
|length_mi=0.09
|terminus_a=SR 17 in Leahy
|terminus_b=SR 174 in Leahy
|established=2009
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR-Bus
|route=240
|length_mi=
|terminus_a=I-182/US 12/SR 240 in Richland
|terminus_b=SR 240 in Richland
|established=
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR-Spur
|route=281
|length_mi=1.69
|terminus_a=I-90/SR 283 near George
|terminus_b=SR 281 near George
|established=
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR-Spur
|route=302
|length_mi=1.28
|established=
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR-Spur
|route=503
|length_mi=8.42
|terminus_b=Swift Reservoir in Skamania County
|established=
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR-Spur
|route=504
|length_mi=0.87
|terminus_a=SR 504 near Kid Valley
|terminus_b=Toutle River Sediment Retention Structure
|established=
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR-Spur
|route=510
|length_mi=1.17
|terminus_b=Cullens Road in Yelm
|established=2010
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR-Spur
|route=524
|dab=Edmonds
|length_mi=0.70
|established=
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR-Spur
|route=524
|dab=Lynnwood
|length_mi=0.50
|terminus_b=SR 524 in Lynnwood
|established=
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR-Spur
|route=525
|length_mi=0.86
|terminus_a=SR 525 in Mukilteo
|terminus_b=SR 526 in Mukilteo
|established=2001
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR-Spur
|route=529
|length_mi=0.20
|established=
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR-Spur
|route=903
|length_mi=0.33
|terminus_a=SR 903 in Cle Elum
|terminus_b=SR 970 near Cle Elum
|established=
|established_ref=
|notes=none
}}
{{routelist row
|state=WA
|type=SR-Spur
|route=906
|length_mi=0.43
|terminus_b=WSDOT Maintenance Office in Hyak
|established=
|established_ref=
|notes=none
}}
{{Routelist bottom|keys=former}}