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Leechburg Bridge North

Leechburg Bridge North

Primary Photographer(s): Nathan Holth and Rick McOmber

Bridge Documented: August 1, 2007

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Key Facts

Facility Carried / Feature Intersected
Mill Bridge Road Over Kiskiminetas River
Location
Leechburg: Armstrong County, Pennsylvania and Westmoreland County, Pennsylvania: United States
Structure Type
Metal 6 Panel Rivet-Connected Pratt Through Truss, Fixed and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Construction Date and Builder / Engineer
1938 By Builder/Contractor: Unknown and Engineer/Design: Pennsylvania State Highway Department

Technical Facts

Rehabilitation Date
1992
Main Span Length
149 Feet (45.4 Meters)
Structure Length
704 Feet (214.6 Meters)
Roadway Width
21.7 Feet (6.61 Meters)
Spans
4 Main Span(s) and 2 Approach Span(s)
NBI Number
64743201033005

Historic Significance Rating (HSR)
View Information About HSR Ratings

Bridge Documentation

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

This bridge is an attractive multi-span example of a standard plan truss bridge in Pennsylvania. It is particularly worth a visit because not only it is heavily skewed, it is easy to get the elevation view of the bridge, unlike other bridges of this type, which for whatever reason are often obstructed by trees.

Information and Findings From Pennsylvania's Historic Bridge Inventory

Discussion of Bridge

The skewed, 6 span, 704' long bridge consists of 4, riveted, 149' long Pratt thru truss spans over the river and a steel stringer span at each end (1 @ 60', 1 @ 26'). The substructure consists of ashlar abutments and piers with concrete caps. The piers have been repaired with concrete on their upstream side. The upper chord and inclined end posts are built up box sections, and the verticals and diagonals are rolled section. The bridge has no innovative or distinctive details. It was built to a state standard design in 1939 is neither historically nor technologically significant. Riveted truss bridge technology dates to the early 20th century.

Discussion of Surrounding Area

The bridge carries a 2 lane road over the Kiskiminetas River, providing access into the Allegheny Ludlum (Allegheny Teledyne) Steel Plant that is beyond the northerly end of the bridge in West Leechburg borough. The bridge is not part of the mill, and it is not located in or adjacent to any potential historic district related to the mill or the towns.

Bridge Considered Historic By Survey: No

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Photo Galleries and Videos: Leechburg Bridge North

 
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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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Maps and Links: Leechburg Bridge North

Coordinates (Latitude, Longitude):

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