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Ten Acre Bridge

Ten Acre Bridge

Primary Photographer(s): Nathan Holth and Rick McOmber

Bridge Documented: August 1, 2007

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Key Facts

Facility Carried / Feature Intersected
Railroad (Conemaugh and Black Lick Railroad) Over Conemaugh River
Johnstown: Cambria County, Pennsylvania: United States
Construction Date and Builder / Engineer
1901 By Builder/Contractor: Unknown

Technical Facts

Rehabilitation Date
Not Available or Not Applicable
Main Span Length
354 Feet (107.9 Meters)
Structure Length
354 Feet (107.9 Meters)
Roadway Width
Not Available
1 Main Span(s)
NBI Number
Not Applicable

Historic Significance Rating (HSR)

Bridge Documentation

A stone on the abutment lists what appears to be a 1901 construction date. This date seems sensible, given the design of the structure.

This bridge is quite unusual to view. It is a narrow railroad bridge, serving a single track, yet it is both long and tall due to its impressive single span design. It looks almost precariously narrow from the portal view, yet when viewed from elevation, it reveals its massive and complex design.

The bridge is a twelve panel pin-connected Pennsylvania truss bridge of significant single span length. Pin-connected Pennsylvania truss bridges are uncommon, and the truss design also represents one of the more complex truss designs around, and offers pleasing geometry to look at. For these reasons of historical significance and aesthetic quality, it is a very significant structure and should be considered historically significant both on a local and national basis.


Photo Galleries and Videos: Ten Acre 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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