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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 (19.76 km) in Memphis.
Unsigned companion route for US 25, US 25W, and US 70. SR 10. 132.40. 213.08. US 231 / US 431 / SR 1 at the Alabama state line in Lincoln County. KY 99 at the Kentucky state line in Macon County. 01923-01-01 1923.
The State Route System of Tennessee is maintained and developed by the Tennessee Department of Transportation (TDOT) in the U.S. state of Tennessee. Currently the state has 14,150 miles (22,770 km) of state-maintained roadways, including 1,233 miles (1,984 km) of Interstate Highways and 13,077 miles (21,045 km) of State Highways. [2]
Route description. I-81 northbound at the SR 394 exit in Blountville. I-81 is maintained by the Tennessee Department of Transportation (TDOT), along with all other Interstate, US, and state highways in Tennessee. In 2022, annual average daily traffic (AADT) volumes ranged from 61,299 vehicles per day at the southern terminus to 34,896 vehicles ...
Interstate 840 (I-840), formerly State Route 840 (SR 840), is a freeway that serves as an outer bypass route around Nashville, Tennessee. Built by the Tennessee Department of Transportation (TDOT), it is also designated as Tennessee National Guard Parkway. [3] At 77.28 miles (124.37 km) long, it is the tenth-longest auxiliary Interstate Highway ...
Interstate 40 in Tennessee. 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.