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This initial system consisted of 3,122.2 miles (5,024.7 km) of federal aid routes, and 1,522.2 miles (2,449.7 km) of state aid highways. [1] When the United States Numbered Highway System was created in 1926, most of the federal aid state routes were assigned a U.S. Route designation as part of this system, but retained their state designations.
Length (km) Southern or western terminus Northern or eastern terminus Formed Removed Notes US 11: 124.86: 200.94 US 11 (Georgia state line) – Chattanooga: US 11E / US 11W / US 70 – Knoxville: 1926: current US 11W: 109.16: 175.68 US 11 / US 11E / US 70 – Knoxville: US 11W / US 421 (Virginia state line) – Bristol: 1929
The longest auxiliary Interstate Highway in Tennessee is I-840, an outer southern bypass around Nashville, at a length of 77.28 miles (124.37 km). The shortest Interstate Highway in Tennessee is the 1.97 miles (3.17 km) I-124 in Chattanooga, which is unsigned; the shortest signed Interstate Highway is I-275 in Knoxville, at 2.98 miles (4.80 km ...
Length (km) Southern or western terminus Northern or eastern terminus Formed Removed Notes SR 1: 538.8: 867.1 I-55/US 61/US 64/US 70/US 79 (Memphis & Arkansas Bridge) in Memphis: US 11E/US 19/SR 34 in Bristol: 1915: current SR 2: 197.0: 317.0 US 41/US 70S/SR 1 in Murfreesboro: US 11/US 70/SR 1 in Farragut: 1923: current
The southernmost 1.8 miles (2.9 km) of I-65 was the first section of Interstate Highway in Tennessee to begin construction and open to traffic after the passage of the Federal-Aid Highway Act. [ 21 ] [ a ] Work began on this stretch on May 23, 1957, [ 22 ] and it was dedicated and opened to traffic on November 15, 1958. [ 23 ]
The route begins with a 70-mile-per-hour (110 km/h) speed limit in Davidson County, which reduces to 65 mph (105 km/h) upon entering Sumner County less than a mile (1.6 km) later. About two miles (3.2 km) later the route has a trumpet interchange with a connector to US 31E , signed as US 31E.
The U.S. Department of Transportation is providing nearly $400 million to build a new Interstate 55 bridge connecting Tennessee and Arkansas across the Mississippi River, replacing the existing 75 ...
In Tennessee, I-81 serves the northeastern part of the state, running 75.66 miles (121.76 km) from its southern terminus with I-40 in Dandridge to the Virginia state line in Bristol. The route serves the Tri-Cities region of the state and the eastern parts of the Knoxville metropolitan area, terminating about 35 miles (56 km) east of Knoxville.