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Brandywine Valley Viaduct

Brandywine Valley Viaduct

Primary Photographer(s): Elaine Deutsch

Bridge Documented: March 25, 2011

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Key Facts

Location
Downingtown: Chester County, Pennsylvania: United States
Structure Type
Metal 9 Panel Pin-Connected Pratt Deck Truss, Fixed and Approach Spans: Metal Deck Girder, Fixed
Construction Date and Builder / Engineer
1904 By Builder/Contractor: Pennsylvania Steel Company of Steelton, Pennsylvania

Technical Facts

Rehabilitation Date
1951
Main Span Length
201 Feet (61 Meters)
Structure Length
1,451 Feet (442 Meters)
Roadway Width
Not Available
Spans
1 Main Span(s) and 24 Approach Span(s)
NBI Number
Not Applicable

Historic Significance Rating (HSR)
View Information About HSR Ratings

Bridge Documentation

View Historic American Engineering Record (HAER) Documentation For This Bridge

HAER Data Pages, PDF

This bridge is a very long and impressive high level railroad bridge. It is mostly deck plate girder spans. However the largest, main span over Brandywine Creek is a pin-connected deck truss. There is also a rivet-connected Warren deck truss. Given that pin-connections are an older technology and rivet connections a newer technology, one might think the rivet-connected span is a replacement. However, both truss spans are original. At the time, the larger span was simply too large to be easy to erect as a rivet-connected truss. This makes the bridge a unique comparison between the truss technologies and it illustrates the gradual transition from pin to rivet connected bridges, which not only occurred over time, but with gradually larger spans as well.

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Photo Galleries and Videos: Brandywine Valley Viaduct

 
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A collection of overview and detail photos. This gallery features data-friendly, fast-loading photos in a touch-friendly popup viewer. Alternatively, Browse Without Using Viewer

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Maps and Links: Brandywine Valley Viaduct

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