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Rochester Beaver Bridge

Rochester Beaver Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: July 1, 2014

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Key Facts

Rochester and Beaver: Beaver County, Pennsylvania: United States
Structure Type
Metal Cantilever 17 Panel Rivet-Connected Pratt Deck Truss, Fixed and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Construction Date and Builder / Engineer
1963 By Builder/Contractor: Pittsburgh - Des Moines Steel Company of Pittsburgh, Pennsylvania and Engineer/Design: Pennsylvania State Highway Department

Technical Facts

Rehabilitation Date
Main Span Length
365 Feet (111.3 Meters)
Structure Length
993 Feet (302.7 Meters)
Roadway Width
60 Feet (18.29 Meters)
3 Main Span(s) and 5 Approach Span(s)
NBI Number

Historic Significance Rating (HSR)
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Bridge Documentation

View Archived National Bridge Inventory Report - Has Additional Details and Evaluation

This bridge is a good example of a deck cantilever truss bridge. A wide structure, it is configured as two superstructures (each having two truss lines) sitting directly beside each other on a single shared substructure. To see how this is the case, stand directly under the bridge and look up, to see not only four truss lines, but a tiny gap between each superstructure's deck.

The bridge includes a 236.5 foot suspended span. The suspended span follows a modified Warren truss configuration, while Pratt truss thinking is evident in the remaining truss system. The eastern end of the bridge has an approach system which includes an interesting "Y" detail to accommodate a ramp.

This bridge is a later example of deck cantilever truss bridge technology but thanks to widespread nationwide demolition of this bridge type, this bridge is increasingly rare and significant. Equally rare is the fact that PennDOT chose to extensively rehabilitate this bridge rather than demolish and replace the bridge. Its a nice change. There were however a number of alterations made. Numerous rivets were replaced with bolts. Additionally, the suspended span hanger and the tension anchorage bearings at the ends of the truss were both supplemented with an additional system.

While it is not known if they were the on-site contractor for this bridge, shop drawings for this bridge were prepared by the Pittsburgh - Des Moines Steel Company of Pittsburgh, Pennsylvania indicating the fabricator of the superstructure.


Photo Galleries and Videos: Rochester Beaver Bridge

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