Kentucky Route 80 (KY 80) is a 483.55-mile-long (778.20 km) state highway in the southern part of the U.S. state of Kentucky. The route originates on the state's western border at Columbus in Hickman County and stretches across the southern portion of the state, terminating southeast of Elkhorn City on the Virginia state line. It is the longest Kentucky State Highway, though the official distance as listed in route logs is much less due to multiple concurrencies with U.S. Route 68 (US 68) and US 23.
Kentucky Route 100 is a state highway in south-central Kentucky. It originates at a junction with U.S. Highway 79 in Russellville in Logan County. The route continues through Simpson, Allen and Monroe Counties to terminate at a junction with KY 90 near Waterview in Cumberland County.
Kentucky Route 79 (KY 79) is a 102-mile-long (164 km) north–south state highway that traverses five counties in west-central Kentucky. It can be seen as an extension of U.S. Route 79 (US 79), as they have the same number and once intersected; KY 79 begins in the same city that US 79 ends, and both travel on a northeast–southwest diagonal path.
Kentucky Route 212 is a short state highway located in Boone County, in the northern region of the U.S. state of Kentucky. The highway is approximately 1.3 miles (2.1 km) long, and partially constructed as a freeway, with the rest being a divided highway. The roadway links Interstate 275 (I-275) to the Cincinnati/Northern Kentucky International Airport, and has been designated as a connector route by the Federal Highway Administration (FHWA). A road first appeared near the location of KY 212 around 1937. A short road was built in the location of KY 212 when the U.S. Army Air Corps built the predecessor to the CVG Airport. The road was reconstructed to a divided highway in 1972, but was part of KY 1334 until 1974 or later, when KY 212 was designated, and KY 1334 was rerouted via Loomis Road and Whitson Drive to end at KY 20.
Interstate 65 (I-65) is part of the Interstate Highway System that runs 887.30 miles (1,427.97 km) north–south from Mobile, Alabama, to Gary, Indiana. The highway crosses Kentucky from south to north, from the Tennessee state line near Franklin to the Indiana state line in Louisville. I-65 passes through three of Kentucky's ten largest cities—Bowling Green, Elizabethtown, and Louisville—and serves Mammoth Cave National Park and Fort Knox. Kentucky was the first state to complete its portion of I-65, with the final section, located near Franklin, opening in 1970.
U.S. Route 231 in Kentucky runs 114 miles (183 km) from the Tennessee state line near Adolphus to the William H. Natcher Bridge on the Ohio River near Rockport, Indiana. It crosses the state mainly in the west-central region, traversing Allen, Warren, Butler, Ohio, and Daviess Counties.
Kentucky Route 3600 (KY 3600) is a secondary urban state highway located entirely in Barren County, Kentucky.
Kentucky Route 383 (KY 383) is a 9.513-mile-long (15.310 km) state highway in the U.S. state of Kentucky. The highway connects mostly rural areas of Simpson County with Franklin.
Kentucky Route 402 (KY 402) is a 16.859-mile-long (27.132 km) state highway in the U.S. state of Kentucky. The highway connects Aurora and Hardin to mostly rural areas of southern Marshall County.
Kentucky Route 420 (KY 420) is a 5.1-mile-long (8.2 km) state highway in the U.S. state of Kentucky. The highway connects southern parts of Franklin County with Frankfort.
Kentucky Route 426 (KY 426) is a 3.395-mile-long (5.464 km) state highway in the U.S. state of Kentucky. The highway travels through rural areas of Marion County.
Kentucky Route 448 (KY 448) is a 3.056-mile-long (4.918 km) state highway located in Brandenburg, Kentucky. It serves the immediate downtown area.
The Russellville Bypass is a beltway around Russellville in Logan County in south central Kentucky. The 12.260-mile-long (19.731 km) highway comprises overlapping portions of U.S. Route 68 and Kentucky Route 80, US 79, and US 431. The north side of the circumferential highway was conceived in the 1980s to relieve traffic in downtown Russellville and as part of greater improvements along the US 68 corridor. The first two phases of the ring road, from US 79 on the west side to US 68 on the east side, were constructed in the 1990s. The state decided to complete the orbital road in the 2000s to resolve continuing traffic bottlenecks along US 431 and US 79 on the south side. The second two phases of the beltline were started in 2010 and completed in 2017. Construction of the Russellville Bypass led to a series of route changes over 20 years involving the city's U.S. Highways, special routes, and state-numbered highways.
Kentucky Route 864 is a 16.339-mile-long (26.295 km) state highway located entirely in the Louisville metropolitan area of Jefferson County in north central Kentucky.
KY 100 west of Franklin
US 31W north of Franklin
