 State Route 129 | ||||
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 SR 129 highlighted in red | ||||
| Route information | ||||
| Maintained by TDOT | ||||
| Length | 49.22 mi (79.21 km) | |||
| Major junctions | ||||
| West end |  US 31 in Waco | |||
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| East end |  SR 55 in Lynchburg | |||
| Location | ||||
| Country | United States | |||
| State | Tennessee | |||
| Counties | Giles, Marshall, Lincoln, Moore | |||
| Highway system | ||||
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State Route 129 (SR 129) is a 49.22-mile-long (79.21 km) east–west state highway in the hills of southern Middle Tennessee.