Pennsylvania Historic Preservation

Blog of the Pennsylvania State Historic Preservation Office

Elizabeth Bridge


Metal truss bridge over Monongahela River

The Elizabeth Bridge carries PA-51 over the Monongahela River in Allegheny County. In the previous Statewide Historic Bridge Inventory, this 1951 Warren thru truss was described as traditionally composed for the period with no innovative or distinctive details that distinguish it from the many other post-WWII major bridges in the region. However, this bridge is an unusual design and one of only a few metal truss bridges with a suspended deck in the state. In addition, this bridge receives points for being multi-span and having exceptional span and overall length, resulting in enough points to elevate it to the status of National Register eligible. Photo courtesy of PennDOT.

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