U.S. Route 641 (US 641) is a U.S. Route in Tennessee and Kentucky. It runs for 165.45 miles (266.27 km) from US 64 south of Clifton, Tennessee to an intersection with US 60 in Marion, Kentucky. While it is considered a spur route of U.S. Route 41, the two routes no longer connect.
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.
U.S. Route 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 near Rockport, Indiana. It crosses the state mainly in the west-central region, traversing Allen, Warren, Butler, Ohio, and Daviess Counties.
Kentucky Route 1508 is a state highway located in northwestern Kentucky. The route starts at KY 109, west of Sturgis. It travels westward to unincorporated area of Caseyville, and turns north near the Ohio River. KY 1508 then travels through the community of Dekoven, before ending at KY 109, northwest of its southern terminus. The route was designated around 1967, after the KY 130 designation was removed from the section in Caseyville, which was connected to the community since 1939.
Kentucky Route 163 (KY 163) is a 29.823-mile-long (47.995 km) state highway that traverses through two counties in south-central Kentucky. It runs from Tennessee State Route 51 at the Kentucky-Tennessee border south of Hestand to U.S. Route 68, Kentucky Route 80, and East Stockton Street in Edmonton via Tompkinsville.
The original alignment of Kentucky Route 67 (KY 67) was a north–south primary state highway that traversed Edmonson and Warren counties in south central Kentucky. It was one of the original state routes of the state highway system maintained by the Kentucky Transportation Cabinet. It was established in 1929 and was officially decommissioned in 1969. At the time of its removal from the state route system, it was estimated to be 21.491 miles (34.586 km) long as determined by the KYTC's state route logs and county road logs.
State Route 261 is a north–south secondary state highway that is located entirely in Macon County in Middle Tennessee. The route’s length is an estimated 14.0 miles (22.5 km).
SR 10 at Lafayette, Tennessee 
KY 87 at Tennessee–Kentucky state line
