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Leechburg Bridge

Leechburg Bridge

Primary Photographer(s): Nathan Holth and Rick McOmber

Bridge Documented: August 1, 2007

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Key Facts

Facility Carried / Feature Intersected
Third Street (PA-4093) Over Kiskiminetas River
Leechburg: Armstrong County, Pennsylvania and Westmoreland County, Pennsylvania: United States
Structure Type
Metal 11 Panel Rivet-Connected Parker Through Truss, Fixed and Approach Spans: Metal Through Girder, Fixed
Construction Date and Builder / Engineer
1935 By Builder/Contractor: Unknown and Engineer/Design: Pennsylvania State Highway Department

Technical Facts

Rehabilitation Date
Main Span Length
340 Feet (103.6 Meters)
Structure Length
669 Feet (203.9 Meters)
Roadway Width
32.2 Feet (9.81 Meters)
1 Main Span(s) and 4 Approach Span(s)
NBI Number

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 standard plan through truss built to state highway department standards for the period. This bridge also features a number of through plate girder approach spans. This particular bridge is impressive because it utilizes the standard plan that included more v-lacing and lattice on the built-up members, which inadvertently results in a more geometrically complex and visually pleasing structure. This bridge also has a decent gateway function for those entering or leaving Leechburg.

Information and Findings From Pennsylvania's Historic Bridge Inventory

Discussion of Bridge

The 5 span bridge consists of a 334'-8" long Parker thru truss main span and 4 simply supported thru girder approach spans ((1 @ 81'-5", 1 @ 80'-7", 1 @ 67'-6", 1 @ 63'-3"). The trusses are traditionally composed with built up members, and while the truss span is long, it has no innovative or distinctive details. It is an example of a bridge type and design that was well established by 1920. Neither the bridge nor its setting are historically or technologically significant.

Discussion of Surrounding Area

The bridge carries a 2 lane street and 1 sidewalk over the Kiskiminetas River and a Conrail track on the Westmoreland County side at West Leechburg. The railroad was originally developed as the West Pennsylvania RR, a subsidiary of the PRR that was built to take advantage of the coal, coke and burgeoning industries in the county. The line became part of the Pennsylvania's Low-Grade Line that enabled freight traffic to avoid grades on the Main Line, and that gave the PRR an operational advantage. The line is not historically significant.

Bridge Considered Historic By Survey: No


Photo Galleries and Videos: Leechburg Bridge

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