Tennessee State Route 378
| Market Street | ||||
TN 378 highlighted in red | ||||
| Route information | ||||
| Maintained by TDOT | ||||
| Length | 2.0 mi (3.2 km) | |||
| Existed | July 1, 1983–present | |||
| Major junctions | ||||
| South end | US 27 / SR 60 in Dayton | |||
| SR 30 in Dayton | ||||
| North end | US 27 in Dayton | |||
| Location | ||||
| Country | United States | |||
| State | Tennessee | |||
| Counties | Rhea | |||
| Highway system | ||||
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State Route 378 (SR 378) is a 2-mile-long (3.2 km) state highway located in Dayton, Rhea County, in the U.S. state of Tennessee.