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Tennessee State Route System
| State Route System of Tennessee | |
|---|---|
    Interstate, US Route, and Primary/Secondary State Routes | |
| System information | |
| Maintained by TDOT | |
| Length | 14,150 mi[2] (22,770 km) |
| Formed | October 1, 1923[1] |
| Highway names | |
| Interstates | Interstate XX (I-XX) |
| US Highways | U.S. Route XX (US XX) |
| State | State Route XX (SR XX) |
| System links | |
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] All of the U.S. Routes in Tennessee have a state route routed concurrently with them, though the state route is hidden and only signed along the green mile marker signs that display mileage within each county.[a] The state route system in Tennessee was established in 1923. Since the 1983 renumbering, state routes have been divided into primary and secondary routes with separate shields used for each.
- ^ Highway Planning Survey Division (1925). Biennial Report of the Commissioner of the Department of Highways and Public Works State of Tennessee for the Years 1923 and 1924 (PDF) (Report). Nashville: Tennessee Department of Highways and Public Works. pp. 39–44. Retrieved May 19, 2023.
- ^ a b "TDOT Fact Sheet" (PDF). Tennessee Department of Transportation. Archived from the original (PDF) on March 12, 2005.
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