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Freeport Road Barge Basin Bridge

Freeport Road Barge Basin Bridge

Primary Photographer(s): Nathan Holth and Rick McOmber

Bridge Documented: August 2, 2007

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Facility Carried / Feature Intersected
Freeport Road Over Barge Basin
Near Oakmont: Allegheny County, Pennsylvania: United States
Structure Type
Metal Through Girder, Fixed
Construction Date and Builder / Engineer
1928 By Builder/Contractor: Fort Pitt Bridge Works of Pittsburgh, Pennsylvania
Rehabilitation Date
Not Available or Not Applicable
Main Span Length
82.0 Feet (25 Meters)
Structure Length
84.0 Feet (25.6 Meters)
Roadway Width
38 Feet (11.58 Meters)
1 Main Span(s)
Inventory Number

Historic Significance Rating (HSR)
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Bridge Documentation

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

Maps, databases, and aerial imagery all show that this bridge crosses a barge basin, which is a short dead-end section of water for barges to enter. However, the plaque on this bridge says that the bridge crosses Deer Creek, which is actually less than a mile east of this bridge. It is unclear why this is shown on the plaque.

This bridge is a typical and representative example of a structure type that Pennsylvania once built with frequency on its highways, the through plate girder. This is unlike other states such as Michigan, which hardly ever built plate girders on its highways. The bridge has modern New Jersey barriers added for vehicular traffic, but otherwise retains excellent historic integrity, including pedestrian and abutment railings and plaques. The abutments are concrete, but framed within them is the smaller stone abutment of a previous bridge at this location.

Information and Findings From Pennsylvania's Historic Bridge Inventory

Discussion of Bridge

The 1928, skewed, single span, built up thru girder bridge is supported on concrete abutments. The girder bridge has steel I beam floorbeams and a concrete deck. The bridge is an example of a common type with no innovative or distinguishing detail. Thru girder bridges were first developed by the railroad industry in the 1850s, and they were used on vehicular roadways in Allegheny County beginning in the late 19th century. The bridge is neither historically or technologically noteworthy.

Discussion of Surrounding Area

The bridge carries a 2 lane road and 2 sidewalks over a basin for barges at a bend in the Allegheny River near Twelvemile Island.

Bridge Considered Historic By Survey: No


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Maps and Links: Freeport Road Barge Basin Bridge

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Bridgehunter.com: View listed bridges within 0.5 miles (0.8 kilometers) of this bridge.

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HistoricBridges.org Bridge Browser: View listed bridges within 10 miles (16 kilometers) of this bridge.

2021 National Bridge Inventory: View listed bridges within 0.5 miles (0.8 kilometers) of this bridge.

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