| State Route 378 | ||||
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| Market Street | ||||
| Route information | ||||
| Maintained by TDOT | ||||
| Length: | 2.0 mi (3.2 km) | |||
| Major junctions | ||||
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| North end: |
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| Location | ||||
| Counties: | Rhea | |||
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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.
SR 378 begins at an intersection with US 27/SR 60 and travels to the west, then marks a sharp turn and travels to the northeast toward Downtown Dayton. In downtown, it has a brief 0.2-mile-long (0.32 km) concurrency with SR 30. It continues northward and comes to and at an interchange with US 27.
The entire route is in Dayton, Rhea County.