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[1]–present | |||
Major junctions | ||||
South end | ![]() ![]() | |||
North end | ![]() | |||
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.[2]