U.S. Route 231 in Kentucky
|Maintained by KYTC|
|Length||114.717 mi (184.619 km)|
|South end||US 231 / US 31E at the Tennessee state line|
| US 31E – Scottsville|
I-65 at Bowling Green
US 31W in Bowling Green
US 68 / KY 80 in Bowling Green
KY 70 / KY 79 – Morgantown
I-165 (3 times)
US 62 – Beaver Dam
US 60 – Owensboro
|North end||US 231 at the Indiana state line near Rockport|
|Counties||Allen, Warren, Butler, Ohio, Daviess|
U.S. Route 231 (US 231) in Kentucky runs 86.465 miles (139.152 km) 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.
Running concurrently with U.S. Route 31E for its first 8.607 miles (13.852 km) 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 into 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-165 on the northwestern edge of the city.
US 231 reaches Butler County to cross the I-165 for a second time, and runs concurrently with KY 79 into Morgantown. KY 70 joins in on the concurrency as US 231, KY 79, and KY 70 cross the Green River. Both state routes separate in the Aberdeen area before crossing the I-165 for a third and final 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.
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.
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)
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. KY 71 originally ran from downtown Scottsville to downtown Owensboro. Portions of the original KY 71 in Butler County was rerouted to a bridge over the Green River in the early 1950s, replacing the Morgantown Ferry. In 1952, US 231 replaced the alignment of KY 71 in its entirety as that allication was extended to include several routes into Tennessee, Kentucky, and Indiana from Montgomery, Alabama.
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 US 231 Business.
In the 2002-03 fiscal year, US 231 in Daviess County was rerouted onto the then-new William H. Natcher Bridge northeast of Owensboro. 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.
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 55 miles per hour (89 km/h) to 65 miles per hour (105 km/h).  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 I-165 Exit 5 interchange at Bowling Green.
|Sumner||||0.000||0.000||US 231 south / US 31E south – Westmoreland, Gallatin, Nashville||Continuation into Tennessee|
|Allen||Adolphus||2.129||3.426||KY 482 west (Andrew Jackson Highway) to KY 3521 south||Eastern terminus of KY 482|
|Petroleum||3.737||6.014||KY 1147 south to KY 3500||Northern terminus of KY-1147|
|Scottsville||7.415||11.933||KY 100 – Franklin, Scottsville Business District|
|8.607||13.852||US 31E north / KY 980 east – Glasgow, Downtown Scottsville||Western terminus of KY 980; End concurrency with US 31E|
|8.836||14.220||KY 3241 north (Old Bowling Green Road)||Southern terminus of KY-3241|
|||14.114||22.714||KY 1332 – Halifax|
|Allen Springs||17.130||27.568||KY 240 west (Woodburn-Allen Springs Road)||Eastern terminus of KY 240|
|Warren||Alvaton||20.471||32.945||KY 961 east (New Cut Road)||Western terminus of KY 961|
|Bowling Green||23.808||38.315||KY 9007 north to I-65 / I-165 – Bowling Green, Owensboro||Southern terminus of KY 9007; at-grade intersection|
|25.061||40.332||KY 622 south – Plano||Northern terminus of KY-622|
|26.028||41.888||KY 2158 north (Cumberland Trace Road)||Southern terminus of KY 2158|
|I-65 to I-165 – Nashville, Louisville||I-65 Exit 22|
|26.633||42.862||KY 884 south (Three Springs Road)||Northern terminus of KY 884|
US 231 Bus. north (Scottsville Road) / KY 880 east (Lovers Lane)
|US 231 turns left onto Campbell Lane|
|30.218||48.631||US 31W (Nashville Road) to I-165 – Western Kentucky University, Kentucky State Police, Woodburn, Franklin|
US 68 (Russellville Road) / KY 80 / US 68 Bus. to I-165 – Russellville, Western Kentucky Univ.
|Begin concurrency with US 68; Western terminus of US 68 Business|
US 68 east (Veterans Memorial Boulevard) / US 231 Bus. south (Morgantown Road) to I-65 north
|Western terminus of US 231 Business; US 231 turns left onto Morgantown Road|
|I-165 to I-65 – Nashville, Scottsville, Owensboro||I-165 Exit 7|
|34.653||55.769||KY 3191 north to KY 2665||Southern terminus of KY 3191|
|||35.450||57.051||KY 2632 west||Western terminus of KY-2632|
|Hadley||40.300||64.857||KY 626 west (Jackson Bridge Road) – Quality||Begin concurrency with KY 626|
|41.373||66.583||KY 626 east||End concurrency with KY 626|
|Butler||Needmore||46.038||74.091||KY 1083 south – Sugar Grove||Northern terminus of KY 1083|
|||47.829||76.973||KY 1435 south – Bowling Green||Northern terminus of KY-1435|
|||50.071||80.581||KY 403 north (Woodbury Loop) – Woodbury||Southern terminus of KY 403|
|52.81||84.99||KY 79 south – Russellville||Begin concurrency with KY 79|
|Morgantown||53.25||85.70||KY 1468 north (Gardner Lane) to KY 70||Southern terminus of KY 1468|
|53.535||86.156||I-165 south – Bowling Green||Exit 26 off I-165 south, and ramps to I-165 south|
I-165 north / US 231 Truck north / KY 79 Truck north – Owensboro
|Exit 28 off I-165 north, and ramps to I-165 north, southern terminus of US 231 Truck/KY 79 Truck|
|55.486||89.296||KY 403 south – Woodbury||Begin concurrency with KY 403|
|55.554||89.405||KY 2161 north (North Main Street)||Southern terminus of KY 2161|
|55.832||89.853||KY 2162 (Old Logansport Road)|
KY 70 west (Veterans Way) / KY 403 north / US 231 Truck south / KY 79 Truck south to I-165 – Industrial District, Charles Black City Park, Rochester
|End concurrency with KY 403; begin concurrency with KY 70; northern terminus of US 231 Truck/KY 79 Truck|
|Bridge over Green River|
|Aberdeen||57.937||93.241||KY 79 north (Caneyville Road) – Caneyville||End concurrency with KY 79|
|58.184||93.638||KY 1328 east (Aberdeen-Jetson Road)||Western terminus of KY-1328|
|||58.895||94.782||KY 70 east (Brownsville Road) – Roundhill, Brownsville, Mammoth Cave National Park||End concurrency with KY 70|
|||61.347||98.728||KY 1118 north (Gilstrap Road)||Southern terminus of KY 1118|
|I-165 – Owensboro, Bowling Green||I-165 Exit 33|
|Ohio||Cromwell||65.267||105.037||KY 505 north (Baizetown Road)||Southern terminus of KY 505|
|65.654||105.660||KY 403 south||Northern terminus of KY 403; dead end|
|||69.227||111.410||KY 269 south – Reed's Ferry, Logansport||Northern terminus of KY 269|
|Beaver Dam||70.167||112.923||Western Kentucky Parkway east to I-165 – Owensboro, Elizabethtown||Exit 75 from WK Parkway east, and ramps to WK Parkway east|
|70.188||112.957||Western Kentucky Parkway west – Paducah||Exit 75 from WK Parkway west, and ramps to WK Parkway west|
|70.315||113.161||KY 2718 north (Applehouse Road)||Southern terminus of KY 2718|
|72.849||117.239||KY 369 south – Rochester, Rochester Ferry||Northern terminus of KY 369|
|73.456||118.216||US 62 west (First Street) – Central City, McHenry, Rockport||Begin concurrency with US 62|
|73.85||118.85||KY 273 west (Goshen Road)||Eastern terminus of KY 273|
|74.315||119.598||US 62 east (Louisville Road) – Rosine, Leitchfield||End concurrency with US 62|
|Hartford||76.516||123.141||KY 69 north to I-165 – Fordsville||Begin concurrency with KY 69|
|77.533||124.777||KY 69 south / KY 1543 south||Northern terminus of KY 1543; end concurrency with KY-69|
|79.126||127.341||KY 136 west – Livermore, Calhoun||Eastern terminus of KY 136|
|||79.949||128.665||KY 1737 north||Southern terminus of KY 1737|
|||84.544||136.060||KY 1414 east (Taffy Road)||Western terminus of KY 1414|
|Pleasant Ridge||87.946||141.535||KY 2115 north||Southern terminus of KY-2115|
|Daviess||Pleasant Ridge||89.874||144.638||KY 764 east||Eastern terminus of KY 764|
|||90.041||144.907||KY 140 west||Eastern terminus of KY-140|
|||93.536||150.532||KY 142 north – Philpot||Southern terminus of KY 142|
|||97.221||156.462||KY 298 north (Old Hartford Road)||Southern end of KY 298 concurrency|
|||97.463||156.851||KY 298 south||Northern end of KY 298 concurrency|
|Owensboro||99.057||159.417||KY 3143 east||Western terminus of KY 3143|
|99.565||160.234||KY 2117 north – Owensboro Community College||Southern terminus of KY 2117|
|99.872||160.728||US 60 west (Wendell H. Ford Expressway) to Audubon Parkway||Begin concurrency with US 60; Exit 16 of US 60/Wendell Ford Expressway|
|100.908||162.396||I-165 south – Hartford, Beaver Dam, Bowling Green, Nashville||US 60 Exit 17; northern terminus of I-165, I-165 exits 72A-B|
|102.098||164.311||KY 54 (Leitchfield Road) – Owensboro, Leitchfield||US 60/231 Exit 18|
|103.056||165.853||KY 603 north||US 60/231 Exit 19; southern terminus of KY 603|
|105.372||169.580||KY 144 – Downtown Owensboro||US 60/231 Exit 21|
|||107.626||173.207||Hawes Boulevard||End of Expressway; US 60 and US 231 continues|
|||111.120||178.830||US 60 east – Lewisport, Hawesville||End concurrency with US 60|
|William H. Natcher Bridge over the Ohio River and Indiana State Road 66|
|Spencer||Rockport||114.717||184.619||US 231 north – Rockport, Jasper, Lafayette, Chicago||Continuation into Indiana|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi|
- Commonwealth of Kentucky. "Official DMI Route Log". Retrieved July 5, 2016.
- DeLorme (2010). Kentucky Atlas & Gazetteer (Map) (4th ed.). Yarmouth, ME: DeLorme. pp. 81 and 64.
- DeLorme (2010). Kentucky Atlas & Gazetteer (Map) (4th ed.). Yarmouth, ME: DeLorme. pp. 63.
- DeLorme (2010). Kentucky Atlas & Gazetteer (Map) (4th ed.). Yarmouth, ME: DeLorme. pp. 32 & 45-46.
- Kentucky Department of State Highways (September 15, 1939). Road Map of Kentucky (PDF) (Map). c. 1:760,320. Frankfort: Kentucky Department of State Highways.
- Kentucky Department of Highways (1957). Kentucky Official Highway Map (PDF) (Map). c. 1:760,320. Frankfort: Kentucky Department of Highways.
- "H.B.'s Fun Facts About Kentucky Highways". Archived from the original August 27, 2002. Retrieved July 12, 2016.
- Kentucky Transportation Cabinet (2001). Kentucky Official Highway Map (PDF) (Map). Scale not given. Frankfort: Kentucky Transportation Cabinet.
- Kentucky Transportation Cabinet (2003). Kentucky Official Highway Map (PDF) (Map). Scale not given. Frankfort: Kentucky Transportation Cabinet.
- 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.
|U.S. Route 231|