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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 ]
The U.S. Highways in Tennessee are the segments of the United States Numbered Highway System that are maintained by the Tennessee Department of Transportation (TDOT) in the state of Tennessee. All of these highways in Tennessee have a state highway designation routed concurrently along them, though the state highway is hidden and only signed ...
Interstate 265 (Tennessee) Interstate 69 in Tennessee. Interstate 169 (Tennessee) Interstate 269. Interstate 75 in Tennessee. Interstate 175 (Kentucky–Tennessee) Interstate 275 (Tennessee) Interstate 475 (Tennessee) Interstate 81 in Tennessee.
The Tennessee leg of I-40 was among 1,047.6 miles (1,685.9 km) of Interstate Highways authorized for the state by the Federal-Aid Highway Act of 1956, commonly known as the Interstate Highway Act. [ 5 ] [ 95 ] Its numbering was approved by the American Association of State Highway Officials on August 14, 1957. [ 2 ]
There are 70 primary interstate highways in the 48 contiguous United States as well as five former and two future primary interstate highways. This number does not include auxiliary Interstate Highways. Serves six states: Texas, Mississippi, Kentucky, Indiana, Michigan. Planned/started in 3 more: Louisiana, Arkansas, Tennessee.
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 ...
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