Pennsylvania State Route System
| Pennsylvania State Route System | |
|---|---|
Route markers for Interstate 76, U.S. Route 6, Pennsylvania Route 18, and State Route 3069 | |
| System information | |
| Length | 42,825 mi (68,920 km) |
| Notes | Numbers are assigned through Location Referencing System; all routes are assigned quadrant numbers, State Route X (SR X), which usually corresponded to the signed numbers of traffic routes (PA X). Traffic Routes are generally state-maintained. |
| Highway names | |
| Interstates | Interstate X (I-X) |
| US Highways | U.S. Route X (US X) |
| State | Pennsylvania Route X (PA X) |
| Quadrant Routes: | State Route X (SR X) |
| System links | |
In the U.S. state of Pennsylvania, state highways are generally maintained by the Pennsylvania Department of Transportation (PennDOT). Each is assigned a four-digit State Route (SR) number in the present Location Referencing System. Traffic Routes are signed as Interstate Highways, U.S. Routes and Pennsylvania Routes (PA Routes), and are prefixed with one to three zeroes to give a four-digit number. PA Routes are also called Pennsylvania Traffic Routes, and formerly State Highway Routes.
There are 42,825 mi (68,920 km) of roadway maintained by state agencies, with 39,715 mi (63,915 km) maintained by PennDOT, 566 mi (911 km) maintained by the Pennsylvania Turnpike Commission, and 2,544 mi (4,094 km) maintained by other state agencies.