 State Route 138 | ||||
|---|---|---|---|---|
 SR 138 highlighted in red | ||||
| Route information | ||||
| Maintained by TDOT | ||||
| Length | 23.01 mi (37.03 km) | |||
| Major junctions | ||||
| South end |  SR 18 near Toone | |||
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| North end |  I-40 in rural western Madison County | |||
| Location | ||||
| Country | United States | |||
| State | Tennessee | |||
| Counties | Hardeman, Madison | |||
| Highway system | ||||
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State Route 138 (SR 138) is a 23.01-mile-long (37.03 km) state highway in West Tennessee, connecting the town of Toone with Interstate 40 (I-40).