Tennessee State Route 421
TN 421 highlighted in red | ||||
| Route information | ||||
| Maintained by TDOT | ||||
| Length | 5.4 mi (8.7 km) | |||
| Major junctions | ||||
| South end | SR 69 in Lebanon | |||
| North end | SR 104 / SR 201 in Sardis | |||
| Location | ||||
| Country | United States | |||
| State | Tennessee | |||
| Counties | Hardin, Henderson | |||
| Highway system | ||||
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State Route 421 (SR 421) is a 5.4-mile-long (8.7 km) north-south state highway in Hardin and Henderson counties of eastern West Tennessee. It connects the community of Lebanon with the town of Sardis via Hinkle.