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| Key Facts |
| Bridge Name | Facility Carried / Feature Intersected | Location | Structure Type | Construction Date and Builder/Engineer | |
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Seward Bridge
| PA-56 and PA-711 Over Conemaugh River | Seward: Indiana County, Pennsylvania and Westmoreland County, Pennsylvania | Metal 9 Panel Rivet-Connected Parker Through Truss, Fixed | 1933 By Builder/Contractor: Unknown and Engineer/Design: Pennsylvania State Highway Department |
| Technical Facts |
| Rehabilitation Date | Main Span Length | Structure Length | Roadway Width | Main Spans | NBI Number |
| 1980 | 183 Feet (55.8 Meters) | 377 Feet (114.9 Meters) | 30 Feet (9.1 Meters) | 2 | 320056059006000 |
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 InventoryDiscussion 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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