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Hertzlers Bridge

Hertzlers Bridge

Primary Photographer(s): Nathan Holth and Rick McOmber

Bridge Documented: May 31, 2010

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Key Facts

Facility Carried / Feature Intersected
Creek Road (TR-427) Over Conodoguinet Creek
Location
Rural: Cumberland County, Pennsylvania: United States

Technical Facts

Rehabilitation Date
1960
Main Span Length
216 Feet (66 Meters)
Structure Length
218 Feet (66 Meters)
Roadway Width
14.8 Feet (4.51 Meters)
Spans
1 Main Span(s)
NBI Number
21720404273616

Historic Significance Rating (HSR)

Bridge Documentation

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

This bridge is an old and an increasingly rare example of a pin-connected Pennsylvania through truss bridge. The bridge was built to a standard design that its builder, Pittsburgh Bridge Company and its agents Nelson and Buchannan used for longer truss spans such as this. This particular bridge has excellent historic integrity is an excellent example of the company's work.

Information and Findings From Pennsylvania's Historic Bridge Inventory

Discussion of Bridge

The one-span, 218'-long, pin-connected, Pennsylvania thru truss bridge is composed of built-up sections and eye bars. The bridge has built-up floorbeams with Z-plate floorbeam hangers. The open steel grid deck and stringers were placed ca. 1960. The bridge is supported on stone abutments with U-shaped wingwalls. The bridge was fabricated in 1896 by the Pittsburgh Bridge Co. and erected by their agents Nelson & Buchanan of Chambersburg. It is historically and technologically significant as one of the four oldest identified examples of Pennsylvania thru truss highway bridges, and one of only about 20 examples from 1890 to 1937 in the state. The Pennsylvania truss design, a variation of the Pratt truss with subdivided panels and polygonal upper chord, was developed in about 1875 by bridge engineers of the Pennsylvania RR. The design was used primarily for long-span railroad applications, but found some popularity for long-span (approx. 200') highway applications from about 1890 to 1910.

Discussion of Surrounding Area

The bridge carries a 1 lane road over a stream in a rural area of active farms. A vernacular residence (ca. 1960) is located at the bridge's southwest quadrant.

Bridge Considered Historic By Survey: Yes

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Photo Galleries and Videos: Hertzlers Bridge

 
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Bridge Photo-Documentation
Original / Full Size Photos
A collection of overview and detail photos. This gallery offers photos in the highest available resolution and file size in a touch-friendly popup viewer. Alternatively, Browse Without Using Viewer
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Bridge Photo-Documentation
Mobile Optimized Photos
A collection of overview and detail photos. This gallery features data-friendly, fast-loading photos in a touch-friendly popup viewer. Alternatively, Browse Without Using Viewer
View Video
Westbound Crossing of the Bridge
Full Motion Video
Streaming video of the bridge. Also includes a higher quality downloadable video for greater clarity or offline viewing.
View Video
Eastbound Crossing of the Bridge
Full Motion Video
Streaming video of the bridge. Also includes a higher quality downloadable video for greater clarity or offline viewing.

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Maps and Links: Hertzlers Bridge

Coordinates (Latitude, Longitude):

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