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Tilghman Street Viaduct

Tilghman Street Viaduct

Primary Photographer(s): Nathan Holth

Bridge Documented: November 2, 2019

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Location
Allentown: Lehigh County, Pennsylvania: United States
Construction Date and Builder / Engineer
1929 By Builder/Contractor: Seeds and Derham of Philadelphia, Pennsylvania and Engineer/Design: James B. Long
Rehabilitation Date
2019
Main Span Length
185.0 Feet (56.4 Meters)
Structure Length
1,387.0 Feet (422.8 Meters)
Roadway Width
36 Feet (10.97 Meters)
Spans
12 Main Span(s)
Inventory Number
23217

Historic Significance Rating (HSR)
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Bridge Documentation

This is a long curved viaduct composed of many open spandrel arch spans. The bridge was being rehabilitated in 

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

Above: Original plans for a pre-2019 repair showing span arrangement.

Above: Historical photo showing bridge construction.

Above: Historical photo showing bridge construction.

Information and Findings From Pennsylvania's Historic Bridge Inventory

Discussion of Bridge

The 12-span, open-spandrel arch viaduct has 10 spans of 90' and 2 spans of 185', which are over the river. Reticulated parapets remain along both sidewalks, with luminaires mounted on higher concrete pylons. The bridge has been determined eligible for the National Register by PHMC.

Discussion of Surrounding Area

The bridge carries a 3 lane city street over the Lehigh River, the abandoned Lehigh Canal, Conrail tracks on both sides of the river, and 2 city streets. The Tilghman Street Viaduct is located in an area of late-20th century industrial, commercial and residential uses. The area does not appear to have historic district potential, although the bridge does span over the abandoned right-of-way of the Lehigh Canal, listed as a historic district in 1979.

Bridge Considered Historic By Survey: Yes

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Photo Galleries and Videos: Tilghman Street Viaduct

 

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A collection of overview and detail photos. This gallery features data-friendly, fast-loading photos in a touch-friendly popup viewer.
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Maps and Links: Tilghman Street Viaduct

Coordinates (Latitude, Longitude):

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

Bridgehunter.com: View listed bridges within 10 miles (16 kilometers) of this bridge.

HistoricBridges.org Bridge Browser: View listed bridges within 0.5 miles (0.8 kilometers) of this bridge.

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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