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Lower Kingtown Road Bridge

   


Lower Kingtown Road Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: November 7, 2015
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Key Facts

Facility Carried / Feature Intersected
Lower Kingtown Road Over Capoolong Creek
Location
Rural: Hunterdon County, New Jersey
Construction Date and Builder / Engineer
1925 By Builder/Contractor: Unknown

Technical Facts

Rehabilitation Date
1999
Main Span Length
52.2 Feet (15.9 Meters)
Structure Length
53.2 Feet (16.2 Meters)
Roadway Width
14 Feet (4.3 Meters)
Spans
1 Main Span(s)
NBI Number
10XXF54

Historic Significance Rating (HSR)

Bridge Documentation

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

This is a traditional 1920s riveted pony truss bridge. The original trusses retain good historic integrity and lack the major welded alterations seen on many other bridges in this county. On this one, welded alterations are minor. However supplemental rods were bolted into the bridge at the vertical members, this being the most notable alteration on the bridge.

At the time of documentation this bridge was being repainted. Hunterdon County is one of the only counties in the United States that actually properly maintains the paint systems on its many historic truss bridges. In the photos seen on this website, the bridge is silver because only the primer has been applied. The final top coat for bridges in this county is green.

Rivets are one of the most reliable fasteners ever created. Even bad ones still usually do their job. Even bad ones can perform for over 90 years. Look carefully inside the top chord of this bridge and you will see some rivets that were not fully driven. Yet the bridge has performed nicely for 91 years as of 2016.

Information and Findings From New Jersey's Historic Bridge Inventory

Discussion of Bridge

The 4-panel Warren with verticals pony truss bridge uses riveted plate construction. It is supported on concrete abutments. The top chord and end posts are built-up box member of channels with cover plate. Many welded repairs and alterations, including replacing the inside angle of the bottom chord with rebars and plates, diminish the integrity of the bridge. A late example of the over 25 county examples of its type, the span is not technologically or historically distinguished.

Discussion of Surrounding Area

The bridge carries one lane of a lightly traveled country road over a minor stream in a wooded rural setting near an abandoned mill. Scattered altered 19th-century houses are visible from the bridge. The setting is unspoiled.

Bridge Considered Historic By Survey: No

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Photos and Videos: Lower Kingtown Road Bridge

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