Tennessee State Route 257
SR 257 highlighted in red  | ||||
| Route information | ||||
| Maintained by TDOT | ||||
| Length | 18.3 mi (29.5 km) | |||
| Existed | July 1, 1983–present | |||
| Major junctions | ||||
| West end | SR 49 near Coopertown | |||
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| East end | US 31W in Millersville | |||
| Location | ||||
| Country | United States | |||
| State | Tennessee | |||
| Counties | Robertson, Sumner | |||
| Highway system | ||||
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State Route 257 (SR 257) is an east–west secondary state highway that traverses southern Robertson and western Sumner counties in Middle Tennessee.