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Seward Bridge

Seward Bridge

Primary Photographer(s): Nathan Holth and Rick McOmber

Bridge Documented: August 1, 2007

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Key Facts

Facility Carried / Feature Intersected
PA-56 and PA-711 Over Conemaugh River
Location
Seward: Indiana County, Pennsylvania and Westmoreland County, Pennsylvania: United States
Construction Date and Builder / Engineer
1933 By Builder/Contractor: Unknown and Engineer/Design: Pennsylvania State Highway Department

Technical Facts

Rehabilitation Date
1980
Main Span Length
183 Feet (55.78 Meters)
Structure Length
377 Feet (114.91 Meters)
Roadway Width
30 Feet (9.14 Meters)
Spans
2 Main Span(s)
NBI Number
320056059006000

Historic Significance Rating (HSR)

Bridge Documentation

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

This bridge is a multi-span example of a standard plan through truss built with frequency in Pennsylvania. PennDOT has been going around demolishing these bridges, particularly the longer multi-span examples. As they do so, bridges like this one become more rare and important to preserve. It is important that these attractive and sturdy bridges be maintained for the enjoyment of future generations.

Information and Findings From Pennsylvania's Historic Bridge Inventory

Discussion of Bridge

The bridge was field inspected because the bridge inspection folder could not be located. The 2 span, 377'-long riveted Parker thru truss bridge built in 1933 is supported on concrete abutments with wingwalls and a concrete pier with terra cotta protection from acid coal mine runoff. The upper chords and inclined end posts are built up box sections, and the lower chords are tow out angles with battens. The web members are rolled. The bridge exhibits no innovative or distinctive details. It is an example of a standard design that the state highway department used with great frequency during the 1930s, and neither the bridge nor its setting are historically or technologically significant.

Discussion of Surrounding Area

The bridge carries a 2 lane road with shoulders over a stream in an area dominated by a mix of early- to mid-20th century residential and commercial development. The area does not appear to have historic district potential.

Bridge Considered Historic By Survey: No

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Photo Galleries and Videos: Seward Bridge

 
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Bridge Photo-Documentation
A collection of overview and detail photos. This photo gallery contains a combination of Original Size photos and Mobile Optimized photos in a touch-friendly popup viewer. Alternatively, Browse Without Using Viewer

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