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Wampum Road Bridge

Willow Grove Mahoning Bridge, Old SR-18 Bridge

Wampum Road Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: July 3, 2006

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Facility Carried / Feature Intersected
Wampum Road (Old PA-18) Over Mahoning River
Location
Rural: Lawrence County, Pennsylvania: United States
Structure Type
Metal 10 Panel Rivet-Connected Parker Through Truss, Fixed and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Construction Date and Builder / Engineer
1930 By Builder/Contractor: Unknown and Engineer/Design: Pennsylvania State Highway Department
Rehabilitation Date
Not Available or Not Applicable
Main Span Length
257.0 Feet (78.3 Meters)
Structure Length
369.0 Feet (112.5 Meters)
Roadway Width
30.2 Feet (9.2 Meters)
Spans
1 Main Span(s) and 2 Approach Span(s)
Inventory Number
377206039510100

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 rare example of a state standard plan Parker truss in Pennsylvania that has a noteworthy skew to it. Many of Pennsylvania's state standard plan through truss bridges have a skew to them, but most are Pratt trusses, not Parker trusses. It is not known why this is the case, but regardless, it makes this bridge stand out as unusual. The bridge's skew angle is 38 degrees.

Information and Findings From Pennsylvania's Historic Bridge Inventory

Discussion of Bridge

The skewed, 3-span, 369'-long bridge is composed of a riveted, 257'-long steel Parker truss main span and stringer approach spans. It is supported on a concrete substructure. The bridge was built to a state design in 1932, and the trusses are traditionally composed with built up box section end posts and chords. The diagonal members are built up. Metal railings are used inside the truss line and on the cantilevered sidewalk. The portal braces are massive because of the extreme skew of the bridge. The bridge has no innovative or distinctive details, and it is typical of the department's designs of the period. Neither the bridge nor its setting is historically or technologically significant.

Discussion of Surrounding Area

The bridge carries a two-lane road and a cantilevered sidewalk over the Mahoning River in a wooded setting.

Bridge Considered Historic By Survey: No

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Maps and Links: Wampum Road Bridge

Coordinates (Latitude, Longitude):

Search For Additional Bridge Listings:

Bridgehunter.com: View listed bridges within 0.5 miles (0.8 kilometers) of this bridge.

Bridgehunter.com: View listed bridges within 10 miles (16 kilometers) of this bridge.

HistoricBridges.org Bridge Browser: View listed bridges within 0.5 miles (0.8 kilometers) of this bridge.

HistoricBridges.org Bridge Browser: View listed bridges within 10 miles (16 kilometers) of this bridge.

2021 National Bridge Inventory: View listed bridges within 0.5 miles (0.8 kilometers) of this bridge.

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