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Amy Road Bridge

Amy Road Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: July 1, 2006

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Key Facts

Facility Carried / Feature Intersected
Amy Road (TR-735) Over Gravel Run
Rural: Crawford County, Pennsylvania: United States
Construction Date and Builder / Engineer
1895 By Builder/Contractor: Unknown

Technical Facts

Rehabilitation Date
Main Span Length
43 Feet (13.1 Meters)
Structure Length
43 Feet (13.1 Meters)
Roadway Width
16 Feet (4.88 Meters)
1 Main Span(s)
NBI Number

Historic Significance Rating (HSR)
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Bridge Documentation

This bridge no longer exists!

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

This historic bridge was demolished and replaced in 2006!

This was a very small three panel pin connected half-hip Pratt pony truss. It featured a wooden deck. An i-beam was added to one side of the deck, supposedly to add strength and support for the bridge. One would expect such an addition to include putting a beam on both sides. This bridge looked unusual with the beam on only one side.

The Historic Bridge Inventory as usual, thinks that small 19th century pin-connected pony trusses are not historic. While it is right in that truss bridges with distinctive details are more significant, a bridge like this, a classic and supposedly "common" pony truss does in fact represent the development of the truss bridge. After all, the bridges that are "common" represent the results of the development, a gradual standardization of bridge design. Furthermore, as this now-demolished bridge helps demonstrate, bridges of this type are no longer common because so many have been demolished.

Information and Findings From Pennsylvania's Historic Bridge Inventory

Discussion of Bridge

The ca. 1895, pin connected, single span, 43'-long, Pratt pony truss bridge is supported on concrete filled, built up caissons. The traditionally composed trusses have no innovative or distinctive details. The upper chords and end posts are built up, the lower chords and diagonals are eye bars to facilitate the pinned field connections, and the verticals are laced angles. The fabricator and construction date are not documented in available records. The bridge is one of several nearly identical ca. 1895 pony truss bridges in the county. Sixteen pin connected Pratt pony truss bridges remain in the county with the earliest dating to 1889. It is the early examples and those with distinctive details that represent the significance and development of the technology. This bridge is not historically or technologically significant.

Discussion of Surrounding Area

The bridge carries 1 lane of an unimproved road over a stream in a sparsely developed, wooded setting.

Bridge Considered Historic By Survey: No


Photo Galleries and Videos: Amy Road Bridge

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Maps and Links: Amy Road Bridge

This historic bridge has been demolished. This map is shown for reference purposes only.

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