U.S. Route 431 in Tennessee
| US 431 highlighted in red | ||||
| Route information | ||||
| Auxiliary route of US 31 | ||||
| Maintained by TDOT | ||||
| Length | 116.10 mi (186.84 km) | |||
| Existed | January 1954–present | |||
| Major junctions | ||||
| South end | US 231 / US 431 at the Alabama state line south of Fayetteville | |||
| North end | US 431 at the Kentucky state line near Springfield | |||
| Location | ||||
| Country | United States | |||
| State | Tennessee | |||
| Counties | Lincoln, Marshall, Maury, Williamson, Davidson, Robertson | |||
| Highway system | ||||
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U.S. Route 431 (US 431) in Tennessee totals an estimated 116 miles (187 km) through Lincoln, Marshall, Maury, Williamson, Davidson, and Robertson counties in Middle Tennessee.