 State Route 20 | ||||
|---|---|---|---|---|
 SR 20; primary in red, unsigned in green | ||||
| Route information | ||||
| Maintained by TDOT | ||||
| Length | 143.04 mi[1][2] (230.20 km) | |||
| Existed | October 1, 1923[3]–present | |||
| Major junctions | ||||
| West end |    US 51 / US 412 / SR 211 in Dyersburg | |||
| East end |  US 43 in Summertown | |||
| Location | ||||
| Country | United States | |||
| State | Tennessee | |||
| Counties | Dyer, Crockett, Madison, Henderson, Decatur, Perry, Lewis, Lawrence, Maury | |||
| Highway system | ||||
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State Route 20 (SR 20) is a 143.04-mile (230.20 km) long east–west primary state highway that begins in Dyersburg and ending near Summertown. SR 20 is unsigned and concurrent with U.S. Route 412 (US 412) for its entire length, except for a short section between Hohenwald and Summertown. Along its route, SR 20 traverses parts of both Middle Tennessee and West Tennessee.
- ^ TDOT Region 3 Pavement Condition Data
- ^ TDOT Region 4 Pavement Condition Data
- ^ 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.