Orange Belt
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The Orange Belt is Pittsburgh, Pennsylvania's longest "belt" in the Pittsburgh/Allegheny County Belt System, running 109 miles (175 km).[1] For most of its route, it is the outermost route in the system, except for the north of the county where the Red Belt runs. The Orange Belt forms a nearly complete circle around the city, except for a 12-mile (19 km) stretch in the south between the towns of Library, Pennsylvania and Elizabeth, Pennsylvania.[citation needed] The belt was originally set up in the 1940s though the current route was finalized in the 1970s.
The current Orange Belt runs through the northern, eastern, and southern sections of the county, connecting four county parks (including South Park and North Park) and the Pittsburgh International Airport.[1] It stretches from its southwestern terminus at PA 88 in Bethel Park, northwest to Moon Township, northeast to Richland Township, southeast to Plum, and finally southwest to its southeastern terminus at PA 51 in Elizabeth. Much of the route was previously rural, though suburban sprawl has placed it in many prominent commercial corridors.
The Orange Belt crosses or joins many Pennsylvania routes including PA 48 (in which its entire route follows the belt), PA 50, PA 51, PA 56, PA 60, PA 88, PA 366, PA 380, PA 910, and PA 978. It also crosses or joins US 22 and US 30. It crosses the Sewickley Bridge.
[edit] Decommissioned Orange Belt
Until the 1970s, the Orange Belt was a complete circle by crossing into Washington County, Pennsylvania, but that section was removed. (However, the belt still enters Westmoreland County--the only one of the system to officially cross into another county.)
Starting at the southwestern terminus at the intersection of Library and Clifton Rds. in Bethel Park, the decommissioned Orange Belt begins at PA 88 South through Library and Finleyville (Washington County), then continues left onto Washington Ave./Finleyville-Elrama Rd., left onto PA 837 North (back into Allegheny County), and right onto PA 51 South for two miles (3 km) to the current southeastern terminus at PA 48 North.
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