Tennessee State Route 51
| Tompkinsville Highway | ||||
SR 51 mainline in red | ||||
| Route information | ||||
| Maintained by TDOT | ||||
| Length | 1.9 mi (3.1 km) | |||
| Existed | October 1, 1923–present | |||
| Major junctions | ||||
| South end | SR 52 in Moss | |||
| North end | KY 163 at the Kentucky state line | |||
| Location | ||||
| Country | United States | |||
| State | Tennessee | |||
| Counties | Clay | |||
| Highway system | ||||
| ||||
State Route 51 (SR 51) is a rural secondary north–south state highway that traverses the northwestern portion of Clay County in Middle Tennessee. It is 1.9 miles (3.1 km) long.