Pennsylvania Route 380
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| Maintained by PennDOT | |||||||
| Length: | 32.80 mi (52.79 km) | ||||||
| Existed: | 1928 – present | ||||||
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| West end: |
 I-579 in Pittsburgh
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| East end: |
 PA 286 in Bell Township
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| Counties: | Allegheny, Westmoreland | ||||||
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Pennsylvania Route 380 (officially, SR 400 because of I-380 elsewhere in Pennsylvania), also known as J.F. Bonetto Memorial Highway and within the city of Pittsburgh Bigelow Boulevard, Baum Boulevard and Frankstown Road, is a 32.80 mi (52.8 km) long state highway in western portions of the U.S. state of Pennsylvania. The western terminus of the route is at Interstate 579 in downtown Pittsburgh near PPG Paints Arena. The eastern terminus is at Pennsylvania Route 286 in Bell Township, near the hamlet of Wakena.
When it was first assigned in the late 1920s, PA 380 occupied only the portion of its modern alignment between PA 286 in Murrysville and PA 286 west of Saltsburg. It was later extended westward over the former routing of PA 80 to Pittsburgh.
PA 380 begins along the ramps of the Bigelow Boulevard and Interstate 579 interchange in Downtown Pittsburgh, north of the former Civic Arena complex. The route proceeds east traversing Ammon Playground park in the Hill District. PA 380 also parallels the Norfolk Southern railroad and the Martin Luther King, Jr. East Busway on this section of the four-lane Bigelow Boulevard. In the neighborhood of Polish Hill, PA 380 intersects the Bloomfield Bridge via eastbound ramp and westbound at-grade intersection; the bridge connects to Liberty Avenue and the Bloomfield neighborhood.
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