Twin Bridges (Philadelphia)

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This article is about the twin bridges carrying U.S. Route 1. For the twin bridges carrying the portion of City Avenue not signed as U.S. Route 1, see City Avenue Bridges.
Twin Bridges
City Avenue Bridges.jpg
Looking north from South Ferry Road with the Falls Bridge in the background.
Coordinates40°00′24″N 75°11′34″W / 40.0067°N 75.1929°W / 40.0067; -75.1929Coordinates: 40°00′24″N 75°11′34″W / 40.0067°N 75.1929°W / 40.0067; -75.1929
Carries US 1 (Roosevelt Expressway)
CrossesSchuylkill River
LocaleFairmount Park, Philadelphia
Official nameTwin Bridges
Characteristics
DesignSteel plate girder
History
Opened1960
Statistics
Daily traffic109,000 (2010)
Tollnone
Location

The Twin Bridges are a pair of steel-plate girder bridges that span the Schuylkill River in Fairmount Park in Philadelphia, Pennsylvania. They carry northbound and southbound traffic on US 1 (Roosevelt Expressway) just north of its intersection with Interstate 76.

The northbound bridge has 11 spans and is 1,921 feet long, while the southbound bridge has 12 spans and is 1,990 feet long. The bridges were built in 1960 and partially rebuilt (redecked) in 1985 and again in 2010. Each bridge carries three lanes of traffic.

The bridges span the Schuylkill River, Dr. Martin Luther King Drive, Kelly Drive, Ridge Avenue, ramps to and from Ridge Avenue, and railroad tracks, including the Philadelphia & Reading Railroad, Schuylkill River Viaduct.

The bridges' design was awarded a Certificate of Award Class II (Honorable Mention) by the American Institute of Steel Construction, who designated it one of "America's Most Beautiful Bridges".

  • 5 bridges, looking north on the Schuylkill

  • Twin Bridges on the right,
    and the Falls Bridge (1856)

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