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Northampton Street Bridge

Northampton Street Bridge

Primary Photographer(s): Nathan Holth and Rick McOmber

Bridge Documented: July 10, 2008

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and Videos
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and Links

Key Facts

Facility Carried / Feature Intersected
Northampton Street Over Delaware River
Location
Easton and Phillipsburg: Northampton County, Pennsylvania and Warren County, New Jersey: United States
Construction Date and Builder / Engineer
1896 By Builder/Contractor: Union Bridge Company of Athens, Pennsylvania

Technical Facts

Rehabilitation Date
2002
Main Span Length
300 Feet (91 Meters)
Structure Length
560 Feet (171 Meters)
Roadway Width
32.2 Feet (9.81 Meters)
Spans
3 Main Span(s)
NBI Number
48730299920005

Historic Significance Rating (HSR)

Bridge Documentation

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

View Historic American Engineering Record (HAER) Documentation For This Bridge

HAER Data Pages, PDF

Visit Delaware River Joint Toll Bridge Commission's Page For This Historic Bridge

This bridge is a unique, incredible blend of engineering and artistry that is unlike any other bridge in the country. At first glance, it has the appearance of an eyebar suspension bridge. However, this bridge is a true cantilever truss bridge. The cantilever arms of this bridge hold a 50 foot (15.2 meter) suspended span truss in the center that has a cleverly disguised design wherein there is no change in the curve of the top chord as it transitions from the cantilever arm to the suspended span. The main indication of the transition is that the diagonal members suddenly become compression members in the center, where the diagonals on the rest of the bridge are tension members (eyebars). The suspended span follows a warren truss configuration.

There are very few cantilever bridges in the United States remaining that are pin-connected in their entirety, and as such the Northampton Street Bridge is technologically significant. The bridge is also a very beautiful bridge, and includes decorative finials, plaques, and statues of the Pennsylvania and New Jersey state seals.

The bridge was rehabilitated in 1924. The bridge underwent major renovation 1957 following severe damage caused by flooding. Despite this, the bridge appears to retain integrity of design. The bridge was also rehabilitated in 1990 and 2002.

This bridge is owned by the Delaware River Joint Toll Bridge Commission (DRJTBC). The DRJTBC has a unique commitment to maintaining the many historic bridges under its ownership, and working with the communities the bridges serve, and sets an example for the rest of the country to follow. The front page of their website often features a photo of a historic bridge, and their slogan is Preserving Our Past, Enhancing Our Future. How many other road/bridge agencies in the United States promote their commitment to historic bridges in this way? Not many.

Not only is the DRJTBC an example of how money might be better spent in regards to non-toll bridges, the DRJTBC bridges are also a great reference when arguing that a historic bridge can be rehabilitated and can also safely continue to function as a vehicular crossing.

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Photo Galleries and Videos: Northampton Street Bridge

 
View Photo Gallery
Structure Overview
Original / Full Size Photos
A collection of overview photos that show the bridge as a whole and general areas of the bridge. This gallery offers photos in the highest available resolution and file size in a touch-friendly popup viewer. Alternatively, Browse Without Using Viewer
View Photo Gallery
Structure Details
Original / Full Size Photos
A collection of detail photos that document the parts, construction, and condition of the bridge. This gallery offers photos in the highest available resolution and file size in a touch-friendly popup viewer. Alternatively, Browse Without Using Viewer
View Photo Gallery
Structure Overview
Mobile Optimized Photos
A collection of overview photos that show the bridge as a whole and general areas of the bridge. This gallery features data-friendly, fast-loading photos in a touch-friendly popup viewer. Alternatively, Browse Without Using Viewer
View Photo Gallery
Structure Details
Mobile Optimized Photos
A collection of detail photos that document the parts, construction, and condition of the bridge. This gallery features data-friendly, fast-loading photos in a touch-friendly popup viewer. Alternatively, Browse Without Using Viewer

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Maps and Links: Northampton Street Bridge

Coordinates (Latitude, Longitude):
40.691490,-75.203840

View Bridge Location In:

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