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SR 459 is a two-lane road for its entire length, and is commonly referred to as the Lexington Bypass. It begins at an at-grade intersection with US 412 a few miles west of downtown Lexington. Here, westbound traffic on US 412 continues freely onto SR 459, and must make a turn to remain on the former route.
KY 125 at the Kentucky state line near Woodland Mills: 1923: current SR 6: 150.93: 242.90 US 43/SR 13 at the Alabama state line in Saint Joseph: US 31E/US 231 at the Kentucky state line near Westmoreland: 1923: current Unsigned companion route for US 43, US 31, and US 31E SR 7: 80.75: 129.95 SR 53 at the Alabama state line in Ardmore
Interstate 40 (I-40) is part of the Interstate Highway System that runs 2,556.61 miles (4,114.46 km) from Barstow, California, to Wilmington, North Carolina. [1] The highway crosses Tennessee from west to east, from the Mississippi River at the Arkansas border to the Blue Ridge Mountains at the North Carolina border.
US 129 (North Carolina state line) near Tallassee: I-40 – Knoxville: 1935: current US 231: 121.15: 194.97 US 231 / US 431 (Alabama state line) near Fayetteville: US 31E / US 231 (Kentucky state line) near Westmoreland: 1952: current US 321: 194.50: 313.02 I-40 near Oak Ridge: US 321 (North Carolina state line) near Butler: 1961: current
The longest Interstate Highway in Tennessee is Interstate 40, at a length of 454.81 miles (731.95 km). The segment of I-40 in Tennessee is also the longest segment of all of the states the route traverses. The shortest mainline Interstate Highway in Tennessee is I-55, at a length of 12.28 miles (19.
The Tennessee Department of Highways and Public Works was established by the Tennessee General Assembly in 1915 and tasked with constructing, maintaining, and improving roads throughout the state. That year, the 538-mile (866 km) Memphis to Bristol Highway, later State Route 1 , was designated as the first state highway in Tennessee.
U.S. Route 421 (also U.S. Highway 421, US 421) is a diagonal northwest–southeast United States Numbered Highway in the states of North Carolina, Tennessee, Virginia, Kentucky, and Indiana. The highway runs for 941 miles (1,514 km) from Fort Fisher, North Carolina , to US 20 in Michigan City, Indiana .
Once the highway reaches Fort Loudon Dam in Loudon County, it crosses the Tennessee River via a bridge, completed in 2017, southeast of the dam then intersects with US 11 in Lenoir City. US 321 has a wrong-way concurrency with SR 95 from a point several miles south of Lenoir City (near Greenback) to its terminus at I-40.