U.S. Route 231 in Kentucky#History
{{short description|Section of U.S. Highway in Kentucky}}
{{highway detail hatnote|U.S. Route 231}}
{{Use American English|date=May 2025}}
{{Use mdy dates|date=January 2025}}
{{Infobox road
|state=KY
|type=US
|route=231
|alternate_name=
|maint=KYTC
|map={{maplink|frame=yes|plain=yes|frame-align=center|frame-width=290|type=line|from=U.S. Route 231 in Kentucky.map}}
|map_custom=yes
|map_notes=US 231 in Kentucky highlighted in red
|length_mi=114.717
|length_round=3
|established=
|direction_a=South
|terminus_a={{Jct|state=TN|US|231|US|31E}} at the Tennessee state line near Adolphus
|junction=
- {{Jct|state=KY|US|31E}} in Scottsville
- {{Jct|state=KY|I|65}} at Bowling Green
- {{Jct|state=KY|US|31W}} in Bowling Green
- {{Jct|state=KY|US|68|KY|80}} in Bowling Green
- {{Jct|state=KY|KY|70|KY|79}} in Morgantown
- {{Jct|state=KY|I|165}} (3 times)
- {{Jct|state=KY|Future|569|Parkway|Western Kentucky}} in Beaver Dam
- {{Jct|state=KY|US|62}} in Beaver Dam
- {{Jct|state=KY|US|60}} in Owensboro
|direction_b=North
|terminus_b={{Jct|state=IN|US|231}} at the Indiana state line near Rockport, IN
|counties=Allen, Warren, Butler, Ohio, Daviess
|previous_type=KY
|previous_route=230
|next_type=KY
|next_route=232
}}
U.S. Route 231 (US 231) in Kentucky runs {{convert|114|mi}} from the Tennessee state line near Adolphus to the William H. Natcher Bridge on the Ohio River (Indiana state line) near Rockport, Indiana. It crosses the state mainly in the west-central region, traversing Allen, Warren, Butler, Ohio, and Daviess Counties.
==Route description==
Running concurrently with U.S. Route 31E for its first {{convert|8.607|mi}} in Kentucky, US 231/31E enters the state from Sumner County, Tennessee, and into Allen County. The two routes separate on the west side of Scottsville after the KY 100 junction. US 231 turns northwestward onto a four-lane highway on its way into Warren County, and into Bowling Green. Just before entering the city, US 231 crosses the southern terminus of KY 9007, a short connector providing access to I-65 and I-165. US 231 crosses I-65 in the Greenwood neighborhood of Bowling Green, US 31W and US 68 within city limits, and I-165 on the northwestern edge of the city.DeLorme (2010). Kentucky Atlas & Gazetteer (Map) (4th ed.). Yarmouth, ME: DeLorme. pp. 81 and 64.
US 231 reaches Butler County to cross I-165 for a second time, and runs concurrently with KY 79 on the southern end of Morgantown. On the northern end of Morgantown, KY 70 joins in on the concurrency as US 231, KY 79, and KY 70 cross the Green River. Both state routes separate from US 231 in the Aberdeen area before crossing the I-165 for a third time before entering Ohio County. US 231 meets U.S. Route 62 in the Beaver Dam/Hartford area after crossing the Wendell H. Ford Western Kentucky Parkway on the south side of Beaver Dam.DeLorme (2010). Kentucky Atlas & Gazetteer (Map) (4th ed.). Yarmouth, ME: DeLorme. pp. 63.
US 231 goes further north into Daviess County to join up with US 60 (Wendell H. Ford Expressway) to bypass Owensboro. US 60 splits from US 231 before leaving the state via the William H. Natcher Bridge going into Spencer County, Indiana.DeLorme (2010). Kentucky Atlas & Gazetteer (Map) (4th ed.). Yarmouth, ME: DeLorme. pp. 32 & 45-46.
==Alternate names==
U.S. 231 has several alternate names throughout its course in Kentucky. They include:
- Scottsville Road (Allen/Warren County line to US 231 Bus/KY 880)
- Campbell Lane (Bowling Green, from US 231 Bus/KY 880 to US 68/80)
- Vietnam Veterans Boulevard (US 68/KY80 to US 231 Bus)
- Morgantown Road (Warren County, US 231 Bus/US 68 to Butler-Warren County line)
- Bowling Green Road (Butler County south of Morgantown)
- South Main Street (Morgantown)
- G.L. Smith Street (Morgantown)
- Beaver Dam Road (Aberdeen to Butler-Ohio County line)
- New Hartford Road (Daviess County, from Ohio County line to US 60)
History
=Kentucky Route 71=
{{Infobox road small
|state=KY
|type=KY
|route=71
|location=Scottsville–Owensboro, Kentucky
|formed=1929
|decommissioned=1952
|length_mi=
|length_round=3
|length_ref=
}}
In Kentucky, US 231 was originally signed as Kentucky Route 71, one of many charter routes of Kentucky's statewide system of highways when it was established in 1929.{{cite KYTC map |year= 1939 |section= |sections= |inset= |link= http://transportation.ky.gov/Planning/Maps/1939KYF.pdf }} KY 71 originally ran from downtown Scottsville to downtown Owensboro. Prior to 1936, KY 71 followed the present-day KY 403 from Morgantown to Cromwell via Logansport and a ferry crossing.{{cite map |author=Gulf Refining Company|url= |map=Road map of Kentucky and Tennessee|title=1935 Official Road Map of Kentucky and Tennessee|year= 1935|section=C6|scale=1:1400000|location=Chicago|publisher=Rand McNally & Company}} In 1936, KY 71 was rerouted to Aberdeen in order to accommodate the alignment KY 70 and KY 105 (now KY 79) via another ferry crossing between Morgantown and Aberdeen.{{cite map |author= Kentucky Transportation Cabinet |url= http://transportation.ky.gov/Planning/Maps/ButlerCo1937.pdf |title=Butler County Highway Map |year=1937|scale=1:62500|location=Frankfort |publisher= Kentucky Transportation Cabinet |access-date=May 20, 2023}} A bridge over the Green River between the two cities opened around 1952, replacing the Morgantown-Aberdeen Ferry. In 1952, US 231 replaced the designation of KY 71 in its entirety as the U.S. route was extended from Montgomery, Alabama into Kentucky and Indiana via Huntsville, Alabama and Murfreesboro, Tennessee.{{cite KYTC map |year= 1957 |section= |sections= |inset= |link= http://transportation.ky.gov/Planning/Maps/1957KYF.pdf }}[https://web.archive.org/web/20020827135301/http://users.mikrotec.com/%7Ehbelkins/kyroads.html "H.B.'s Fun Facts About Kentucky Highways"]. Archived from the [http://users.mikrotec.com/%7Ehbelkins/kyroads.html original] August 27, 2002. Retrieved July 12, 2016. US 231 also replaced parts of KY 75's course through downtown Owensboro, including its final stretch onto the Owensboro Bridge into Indiana. Kentucky Route 71 was reassigned as a renumbering of KY 231 from Jarvis Store to Bush, but this was later renumbered to KY 1803 because of I-71.
=Modern-day realignments (1990-present)=
In August 1999, US 231 in Bowling Green was rerouted onto KY 880 (Campbell Lane) from the Scottsville Road intersection to the Morgantown Road intersection on the northwest side of town. The former alignment of US 231 into downtown Bowling Green was redesignated as U.S. 231 Business.
In 2002, US 231 in Daviess County was rerouted from downtown Owensboro onto the then-new William H. Natcher Bridge north of Maceo. It previously followed the current KY 2155 and KY 2262 onto the Owensboro Bridge in downtown Owensboro into Spencer County until the opening of the Natcher Bridge.{{cite KYTC map |year= 2001 |section= |sections= |inset= |link= http://transportation.ky.gov/Planning/Maps/2001KYF.pdf }}{{cite KYTC map |year= 2003 |section= |sections= |inset= |link= http://transportation.ky.gov/Planning/Maps/2003KYF.pdf }}
=Widening of Morgantown's South Main Street=
The stretch of US 231 from the Natcher Parkway (now I-165) interchange to Bell Street in Morgantown was widened to include a center lane for left-turning in 2013–2014.{{cite news|last=Jobe |first=Jeff |title=Patton's word is good: State approves its portion of $12M US 231 project |work=Butler County Banner-Republican |date=July 28, 1999}}, page 1.{{cite news|last=Terry |first=Sam |title=Highway 231 Dream Realized |work=Butler County Banner-Republican |date=February 2, 2013}}, pages 1 and 16.{{cite news|last=Terry |first=Sam |title=Widening efforts begun on US 231 in Butler County |work=Butler County Banner-Republican |date=February 2, 2013}}, page 1.
=Scottsville Road speed limit increase=
In late May 2017, the KYTC raised the speed limit of US 231 from near Scottsville to the near the Drakes Creek bridge south of Bowling Green from the original {{convert|55|mph}} to {{convert|65|mph}}.French, Jackson (May 23, 2017). “State increases speed limit to 65 mph on U.S. 231.” Bowling Green Daily News, May 23, 2017, pages 1A and 6A. Retrieved May 25, 2017. This makes this stretch of US 231 the second section of a four-lane divided highway with unlimited access in the region with a 65 mph speed limit, the first being US 68/KY 80 from I-24 in Trigg County to the Natcher Parkway Exit 7 (now I-165 Exit 5) interchange at Bowling Green.
==Major intersections==
{{jcttop|length_ref=|state=KY}}
{{TNint
|county=Sumner
|location=none
|mile=0.000
|road={{Jct|state=TN|US|231|US|31E|dir1=south|dir2=south|city1=Westmoreland|city2=Gallatin|city3=Nashville}}
|notes=Continuation into Tennessee
}}
{{KYint
|county=Allen
|cspan=7
|location=Adolphus
|mile=2.129
|road={{Jct|state=KY|KY|482|dir1=west|to2=to|KY|3521|dir2=south|name1=Andrew Jackson Highway}}
|notes=Eastern terminus of KY 482
}}
{{KYint
|location=Petroleum
|mile=3.737
|road={{Jct|state=KY|KY|1147|dir1=south|to2=to|KY|3500}}
|notes=Northern terminus of KY-1147
}}
{{KYint
|location=Scottsville
|lspan=3
|mile=7.415
|road={{Jct|state=KY|KY|100|city1=Franklin|location2=Scottsville Business District}}
|notes=
}}
{{KYint
|type=concur
|mile=8.607
|road={{Jct|state=KY|US|31E|dir1=north|KY|980|dir2=east|city1=Glasgow|location2=Downtown Scottsville}}
|notes=Western terminus of KY 980; End concurrency with US 31E
}}
{{KYint
|mile=8.836
|road={{Jct|state=KY|KY|3241|dir1=north|name1=Old Bowling Green Road}}
|notes=Southern terminus of KY-3241
}}
{{KYint
|location=none
|mile=14.114
|road={{Jct|state=KY|KY|1332|city1=Halifax}}
|notes=
}}
{{KYint
|location=Allen Springs
|mile=17.130
|road={{Jct|state=KY|KY|240|dir1=west|name1=Woodburn-Allen Springs Road}}
|notes=Eastern terminus of KY 240
}}
{{KYint
|county=Warren
|cspan=15
|location=Alvaton
|mile=20.471
|road={{Jct|state=KY|KY|961|dir1=east|name1=New Cut Road}}
|notes=Western terminus of KY 961
}}
{{KYint
|location=Bowling Green
|lspan=11
|mile=23.808
|road={{Jct|state=KY|KY|9007|I|65|I|165|to2=yes|dir1=north|city1=Bowling Green|city2=Owensboro}}
|notes=Southern terminus of KY 9007; at-grade intersection
}}
{{KYint
|mile=25.061
|road={{Jct|state=KY|KY|622|dir1=south|city1=Plano}}
|notes=Northern terminus of KY-622
}}
{{KYint
|mile=26.028
|road={{Jct|state=KY|KY|2158|dir1=north|name1=Cumberland Trace Road}}
|notes=Southern terminus of KY 2158
}}
{{KYint
|mile=26.209
|mile2=26.253
|road={{Jct|state=KY|I|65|to2=to|I|165|location1=Nashville|city2=Louisville}}
|notes=I-65 Exit 22
}}
{{KYint
|mile=26.633
|road={{Jct|state=KY|KY|884|dir1=south|name1=Three Springs Road|name2=Ken Bale Boulevard}}
|notes=Northern terminus of KY 884
}}
{{KYint
|mile=27.631
|road={{Jct|state=KY|US-Bus|231|dir1=north|KY|880|dir2=east|name1=Scottsville Road|name2=Lovers Lane|dab1=Bowling Green}}
|notes=US 231 turns left onto Campbell Lane
}}
{{KYint
|mile=30.218
|road={{Jct|state=KY|US|31W|to2=to|I|165|name1=Nashville Road|location1=Western Kentucky University|location2=Kentucky State Police|city3=Woodburn|city4=Franklin}}
|notes=
}}
{{KYint
|type=concur
|mile=31.058
|road={{Jct|state=KY|US|68|KY|80|US-Bus|68|to4=to|I|165|name1=Russellville Road|city1=Russellville|location2=Western Kentucky Univ.}}
|notes=Begin concurrency with US 68; Western terminus of US 68 Business
}}
{{KYint
|type=concur
|mile=32.57
|road={{Jct|state=KY|US|68|dir1=east|US-Bus|231|dir2=south|name1=Veterans Memorial Boulevard|name2=Morgantown Road|to3=to|I|65|dir3=north|dab2=Bowling Green}}
|notes=Western terminus of US 231 Business; US 231 turns left onto Morgantown Road
}}
{{KYint
|mile=33.500
|mile2=33.556
|road={{Jct|state=KY|I|165|to2=to|I|65|location1=Nashville|city2=Scottsville|city3=Owensboro}}
|notes=I-165 Exit 7
}}
{{KYint
|mile=34.653
|road= {{Jct|state=KY|KY|3191|dir1=north|to2=to|KY|2665}}
|notes=Southern terminus of KY 3191
}}
{{KYint
|location=none
|mile=35.450
|road={{Jct|state=KY|KY|2632|dir1=west}}
|notes=Western terminus of KY-2632
}}
{{KYint
|type=concur
|location=Hadley
|lspan=2
|mile=40.300
|road={{Jct|state=KY|KY|626|dir1=west|name1=Jackson Bridge Road|city1=Quality}}
|notes=Begin concurrency with KY 626
}}
{{KYint
|type=concur
|mile=41.373
|road={{Jct|state=KY|KY|626|dir1=east}}
|notes=End concurrency with KY 626
}}
{{KYint
|county=Butler
|cspan=17
|location=Needmore
|ctdab=Butler
|mile=46.038
|road={{Jct|state=KY|KY|1083|dir1=south|city1=Sugar Grove}}
|notes=Northern terminus of KY 1083
}}
{{KYint
|location=none
|mile=47.829
|road={{Jct|state=KY|KY|1435|dir1=south|city1=Bowling Green}}
|notes=Northern terminus of KY-1435
}}
{{KYint
|location=none
|lspan=2
|mile=50.071
|road={{Jct|state=KY|KY|403|dir1=north|name1=Woodbury Loop|city1=Woodbury}}
|notes=Southern terminus of KY 403
}}
{{KYint
|type=concur
|mile=52.81
|road={{Jct|state=KY|KY|79|dir1=south|city1=Russellville}}
|notes=Begin concurrency with KY 79
}}
{{KYint
|location=Morgantown
|lspan=7
|mile=53.25
|road={{Jct|state=KY|KY|1468|dir1=north|to2=to|KY|70|name1=Gardner Lane}}
|notes=Southern terminus of KY 1468
}}
{{KYint
|mile=53.535
|road={{Jct|state=KY|I|165|dir1=south|dir2=south|city1=Bowling Green}}
|notes=Exit 26 on I-165 southbound, and ramps to I-165 south
}}
{{KYint
|mile=53.549
|road={{Jct|state=KY|I|165|dir1=north|US-Truck|231|dir2=north|KY-Truck|79|dir3=north|dir4=north|city1=Owensboro}}
|notes=Exit 28 on I-165 northbound, and ramps to I-165 north, southern terminus of US 231 Truck/KY 79 Truck
}}
{{KYint
|type=concur
|mile=55.486
|road={{Jct|state=KY|KY|403|dir1=south|city1=Woodbury}}
|notes=Begin concurrency with KY 403
}}
{{KYint
|mile=55.554
|road={{Jct|state=KY|KY|2161|dir1=north|name1=North Main Street}}
|notes=Southern terminus of KY 2161
}}
{{KYint
|mile=55.832
|road={{Jct|state=KY|KY|2162|name1=Old Logansport Road}}
|notes=
}}
{{KYint
|type=concur
|mile=56.124
|road={{Jct|state=KY|KY|70|dir1=west|KY|403|dir2=north|US-Truck|231|dir3=south|KY-Truck|79|dir4=south|to5=to|I|165|name1=Veterans Way|location1=Industrial District|location2=Charles Black City Park|city3=Rochester}}
|notes=End concurrency with KY 403; begin concurrency with KY 70; northern terminus of US 231 Truck/KY 79 Truck
}}
{{KYint
|location=none
|mile=56.868
|mile2=57.148
|place=Bridge over Green River
}}
{{KYint
|type=concur
|location=Aberdeen
|lspan=2
|mile=57.937
|road={{Jct|state=KY|KY|79|dir1=north|name1=Caneyville Road|city1=Caneyville}}
|notes=End concurrency with KY 79
}}
{{KYint
|mile=58.184
|road={{Jct|state=KY|KY|1328|dir1=east|name1=Aberdeen-Jetson Road}}
|notes=Western terminus of KY-1328
}}
{{KYint
|type=concur
|location=none
|mile=58.895
|road={{Jct|state=KY|KY|70|dir1=east|name1=Brownsville Road|city1=Roundhill|city2=Brownsville|location3=Mammoth Cave National Park}}
|notes=End concurrency with KY 70
}}
{{KYint
|location=none
|mile=61.347
|road={{Jct|state=KY|KY|1118|dir1=north|name1=Gilstrap Road}}
|notes=Southern terminus of KY 1118
}}
{{KYint
|location=none
|mile=62.39
|mile2=62.446
|road={{Jct|state=KY|I|165|city1=Owensboro|city2=Bowling Green}}
|notes=I-165 Exit 33
}}
{{KYint
|county=Ohio
|cspan=16
|location=Cromwell
|lspan=2
|mile=65.267
|road={{Jct|state=KY|KY|505|dir1=north|name1=Baizetown Road}}
|notes=Southern terminus of KY 505
}}
{{KYint
|mile=65.654
|road= {{Jct|state=KY|KY|403|dir1=south}}
|notes=Northern terminus of KY 403; dead end
}}
{{KYint
|location=none
|mile=69.227
|road={{Jct|state=KY|KY|269|dir1=south|location1=Reed's Ferry|city2=Logansport}}
|notes=Northern terminus of KY 269
}}
{{KYint
|location=Beaver Dam
|lspan=7
|mile=70.167
|road={{Jct|state=KY|Parkway|Western Kentucky|dir1=east|to2=to|I|165|city1=Owensboro|city2=Elizabethtown}}
|notes=Exit 75 on WK Parkway eastbound, and ramps to WK Parkway east
}}
{{KYint
|mile=70.188
|road={{Jct|state=KY|Parkway|Western Kentucky|dir1=west|city1=Paducah}}
|notes=Exit 75 on WK Parkway westbound, and ramps to WK Parkway west
}}
{{KYint
|mile=70.315
|road={{Jct|state=KY|KY|2718|dir1=north|name1=Applehouse Road}}
|notes=Southern terminus of KY 2718
}}
{{KYint
|mile=72.849
|road={{Jct|state=KY|KY|369|dir1=south|city1=Rochester|location2=Rochester Ferry}}
|notes=Northern terminus of KY 369
}}
{{KYint
|type=concur
|mile=73.456
|road={{Jct|state=KY|US|62|dir1=west|name1=First Street|city1=Central City|city2=McHenry|city3=Rockport}}
|notes=Begin concurrency with US 62
}}
{{KYint
|mile=73.85
|road={{Jct|state=KY|KY|273|dir1=west|name1=Goshen Road}}
|notes=Eastern terminus of KY 273
}}
{{KYint
|type=concur
|mile=74.315
|road={{Jct|state=KY|US|62|dir1=east|name1=Louisville Road|city1=Rosine|city2=Leitchfield}}
|notes=End concurrency with US 62
}}
{{KYint
|type=concur
|location=Hartford
|lspan=3
|mile=76.516
|road={{Jct|state=KY|KY|69|dir1=north|to2=to|I|165|city1=Fordsville}}
|notes=Begin concurrency with KY 69
}}
{{KYint
|mile=77.533
|road={{Jct|state=KY|KY|69|dir1=south|KY|1543|dir2=south}}
|notes=Northern terminus of KY 1543; end concurrency with KY-69
}}
{{KYint
|mile=79.126
|road={{Jct|state=KY|KY|136|dir1=west|city1=Livermore|city2=Calhoun}}
|notes=Eastern terminus of KY 136
}}
{{KYint
|location=none
|mile=79.949
|road={{Jct|state=KY|KY|1737|dir1=north}}
|notes=Southern terminus of KY 1737
}}
{{KYint
|location=none
|mile=84.544
|road={{Jct|state=KY|KY|1414|dir1=east|name1=Taffy Road}}
|notes=Western terminus of KY 1414
}}
{{KYint
|location=Pleasant Ridge
|mile=87.946
|road={{Jct|state=KY|KY|2115|dir1=north}}
|notes=Southern terminus of KY-2115
}}
{{KYint
|county=Daviess
|cspan=15
|location=Pleasant Ridge
|mile=89.874
|road={{Jct|state=KY|KY|764|dir1=east}}
|notes=Eastern terminus of KY 764
}}
{{KYint
|location=none
|mile=90.041
|road={{Jct|state=KY|KY|140|dir1=west}}
|notes=Eastern terminus of KY-140
}}
{{KYint
|location=none
|mile=93.536
|road={{Jct|state=KY|KY|142|dir1=north|city1=Philpot}}
|notes=Southern terminus of KY 142
}}
{{KYint
|type=concur
|location=none
|mile=97.221
|road={{Jct|state=KY|KY|298|dir1=north|name1=Old Hartford Road}}
|notes=Southern end of KY 298 concurrency
}}
{{KYint
|type=concur
|location=none
|mile=97.463
|road={{Jct|state=KY|KY|298|dir1=south}}
|notes=Northern end of KY 298 concurrency
}}
{{KYint
|location=Owensboro
|lspan=7
|mile=99.057
|road={{Jct|state=KY|KY|3143|dir1=east}}
|notes=Western terminus of KY 3143
}}
{{KYint
|mile=99.565
|road={{Jct|state=KY|KY|2117|dir1=north|location1=Owensboro Community College}}
|notes=Southern terminus of KY 2117
}}
{{KYint
|type=concur
|mile=99.872
|road={{Jct|state=KY|US|60|dir1=west|to2=to|Parkway|Audubon|name1=Wendell H. Ford Expressway}}
|notes=Begin concurrency with US 60; Exit 16 of US 60/Wendell Ford Expressway
}}
{{KYint
|mile=100.908
|road={{Jct|state=KY|I|165|dir1=south|city1=Hartford|city2=Beaver Dam|city3=Bowling Green|location4=Nashville}}
|notes=US 60 Exit 17; northern terminus of I-165, exits 70A-B northbound; trumpet interchange.
}}
{{KYint
|mile=102.098
|road={{Jct|state=KY|KY|54|name1=Leitchfield Road|city1=Owensboro|city2=Leitchfield}}
|notes=US 60/231 Exit 18
}}
{{KYint
|mile=103.056
|road={{Jct|state=KY|KY|603|dir1=north}}
|notes=US 60/231 Exit 19; southern terminus of KY 603
}}
{{KYint
|mile=105.372
|road={{Jct|state=KY|KY|144|location1=Downtown Owensboro}}
|notes=US 60/231 Exit 21
}}
{{KYint
|location=none
|mile=107.626
|road=Hawes Boulevard
|notes=End of Expressway; US 60 and US 231 continues
}}
{{KYint
|type=concur
|location=none
|mile=111.120
|road={{Jct|state=KY|US|60|dir1=east|city1=Lewisport|city2=Hawesville}}
|notes=End concurrency with US 60
}}
{{KYint
|location=none
|mile=113.816
|mile2=114.710
|place=William H. Natcher Bridge over the Ohio River and Indiana State Road 66
}}
{{INint
|county=Spencer
|location=Rockport
|mile=114.717
|road={{Jct|state=IN|US|231|dir1=north|city1=Rockport|city2=Jasper|city3=Lafayette|location4=Chicago}}
|notes=Continuation into Indiana
}}
{{jctbtm|keys=concur}}
See also
- {{Portal-inline|United States}}
- {{Portal-inline|U.S. Roads}}
- U.S. Route 231
- Special routes of U.S. Route 231
References
{{Reflist}}
External links
{{Attached KML|display=inline,title}}
- [http://transportation.ky.gov/ Kentucky Transportation Cabinet]
- [http://www.kentuckyroads.com/us_231/ US 231 at KentuckyRoads.com]
{{state detail page browse|type=US|route=231|state=Kentucky|statebefore=Tennessee|stateafter=Indiana}}