 Pennsylvania Route 366 | ||||
|---|---|---|---|---|
 | ||||
| Route information | ||||
| Maintained by PennDOT | ||||
| Length | 14.8 mi[1] (23.8 km) | |||
| Existed | 1928–present | |||
| Major junctions | ||||
| West end |  PA 28 in Tarentum | |||
| ||||
| East end |  PA 66 in Murrysville | |||
| Location | ||||
| Country | United States | |||
| State | Pennsylvania | |||
| Counties | Allegheny, Westmoreland | |||
| Highway system | ||||
| ||||
Pennsylvania Route 366 (PA 366) is a 14.8-mile-long (23.8 km) state highway located in Allegheny and Westmoreland counties in Pennsylvania. The western terminus is at PA 28 in Tarentum. The eastern terminus is at PA 66 in Murrysville. The last 1/2 mile of the Red Belt route of the Allegheny County belt system runs along PA 366 in Tarentum from its eastbound beginning at the PA 28 interchange to the intersection of Freeport Rd. and Ross St. where the Red Belt terminates.