Tennessee State Route 143
|Length:||12.46 mi (20.05 km)|
|south end:||NC 261 near Roan Mountain State Park|
|north end:||US 19E / SR 37 in Roan Mountain|
State Route 143 is a 12.6 mile state highway that goes through the Cherokee National Forest and Roan Mountain State Park in northeastern Tennessee. The road is very curvy as it does go through a mountainous area. Its northern terminus is US 19E in the town of Roan Mountain and its southern terminus is NC 261.