Tennessee State Route 270
| Old Columbia Road | ||||
SR 270 highlighted in red | ||||
| Route information | ||||
| Maintained by TDOT | ||||
| Length | 9.5 mi (15.3 km) | |||
| Existed | July 1, 1983–present | |||
| Major junctions | ||||
| West end | US 31A / SR 99 in Chapel Hill | |||
| East end | US 41A near Unionville | |||
| Location | ||||
| Country | United States | |||
| State | Tennessee | |||
| Counties | Marshall, Bedford | |||
| Highway system | ||||
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State Route 270 (SR 270), also known as Old Columbia Road, is a 9.5-mile-long (15.3 km) east–west state highway in Middle Tennessee. It connects Chapel Hill with Unionville and Shelbyville.