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U.S. Route 20 in Pennsylvania

U.S. Route 20 marker
U.S. Route 20
Map
US 20 highlighted in red
Route information
Maintained by PennDOT
Length45.433 mi[1] (73.117 km)
Existed1926–present
Tourist
routes
Great Lakes Seaway Trail
Lake Erie Circle Tour
Major junctions
West end US 20 at Ohio border near West Springfield
Major intersections US 6N near West Springfield
I-79 in Erie
US 19 in Erie
I-90 near North East
East end US 20 at New York border near North East
Location
CountryUnited States
StatePennsylvania
CountiesErie
Highway system
US 19 PA 21
PA 9 PA 10

U.S. Route 20 (US 20) is an east–west United States Numbered Highway in Pennsylvania, which clips the northwestern corner of the state, running entirely in Erie County. While it is part of the nation's longest road, it features the shortest segment of any two-digit U.S. Route in the commonwealth. Although bypassed by Interstate 90 (I-90) as the primary through route in the area, heavy traffic has led to nearly the entire highway being widened to four lanes in width.

  1. ^ Bureau of Maintenance and Operations (January 2015). Roadway Management System Straight Line Diagrams (Report) (2015 ed.). Pennsylvania Department of Transportation. Retrieved June 30, 2015.[permanent dead link]

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