Tennessee State Route 340
TN 340 highlighted in red | ||||
| Route information | ||||
| Maintained by TDOT | ||||
| Length | 25.9 mi (41.7 km) | |||
| Existed | July 1, 1983–present | |||
| Major junctions | ||||
| South end | US 25 / US 70 near Del Rio | |||
| I-81 near Morristown | ||||
| North end | SR 113 near Morristown | |||
| Location | ||||
| Country | United States | |||
| State | Tennessee | |||
| Counties | Cocke, Greene, Hamblen | |||
| Highway system | ||||
| ||||
State Route 340 (SR 340) is a state highway in the eastern portion of the U.S. state of Tennessee. It travels south-to-north through portions of Cocke, Greene and Hamblen counties.