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Emlenton Bridge, Spanning Allegheny River, Travel Route 38 (Legislative Route 75), Emlenton, Venango County, PA

Emlenton Bridge, Spanning Allegheny River, Travel Route 38 (Legislative Route 75), Emlenton, Venango County, PA

 
 
description

Summary

Significance: The existing Emlenton Bridge is significant in the areas of engineering and transportation, specifically for its age, size, type of truss, length of truss for this age, and material. The bridge was built in 1883 and has survived with its original Whipple trusses. Also referred to as double-intersection Pratt trusses, these spans are particularly long for this period. The substantial spans and deep truss account for the double-intersection configuration, which is used for greater strength. The original wrought-iron construction is also significant. The Wrought Iron Bridge Company of Canton, Ohio, was a prolific bridge building company in the 1800s, building bridges not only in the United States, but also in Canada and Mexico. The Emlenton Bridge is pictured in the company's 1885 catalog. The bridge currently has good integrity, with its portal ornament, erector's and county plaques, data plates, and decorative end lacing still in place. Historically, the structure has provided a local crossing over the Allegheny River in the same location as an earlier covered bridge and ferry. It became the first free bridge crossing the river in Venango County.
Survey number: HAER PA-101
Building/structure dates: 1883 Initial Construction
Building/structure dates: 1913 Subsequent Work
Building/structure dates: 1952 Subsequent Work
Building/structure dates: 1965 Subsequent Work
Building/structure dates: 1941-1942 Subsequent Work
Building/structure dates: 1945 Subsequent Work
Building/structure dates: 1952 Subsequent Work
Building/structure dates: 1965 Subsequent Work
Building/structure dates: 1979 Subsequent Work
Building/structure dates: 1983

person

Contributors

Historic American Engineering Record, creator
Wrought Iron Bridge Company
McCain, Daniel
Emlenton Bridge Company
Pennsylvania Department of Transportation
Yule, Jordan Associates
Yearby, Jean P, transmitter
Laird, J Ira, photographer
Corbe, Christine, historian
place

Location

Emlenton (Pa.)41.17728, -79.70783
Google Map of 41.1772836, -79.7078274
create

Source

Library of Congress
copyright

Copyright info

No known restrictions on images made by the U.S. Government; images copied from other sources may be restricted. http://www.loc.gov/rr/print/res/114_habs.html

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