 State Route 423 | ||||
|---|---|---|---|---|
 TN 423 highlighted in red | ||||
| Route information | ||||
| Maintained by TDOT | ||||
| Length | 10.8 mi (17.4 km) | |||
| Major junctions | ||||
| West end |  US 79 in McKenzie | |||
 SR 22 in McKenzie | ||||
| East end |  SR 77 in Mixie | |||
| Location | ||||
| Country | United States | |||
| State | Tennessee | |||
| Counties | Carroll | |||
| Highway system | ||||
| ||||
State Route 423 (SR 423) is a 10.8-mile-long (17.4 km) state highway north–south state highway in northern Carroll County, Tennessee. It connects the city of Mckenzie with the community of Mixie.