Built in the 1930s, this is an early example of an all-welded truss bridge. Composed of rolled beams lacking the traditional v-lacing and lattice found in the riveted truss bridges which were more common in this period, it is essentially very similar in design and materials to welded truss bridges built today. While notable for documenting the early years of this type of truss bridge, it lacks the significance of riveted truss bridges since unlike riveted truss bridges, welded truss bridges continue to be built today, therefore this bridge is not an example of a disappearing structure type.
The bridge retains good historic integrity with no major alterations, and is locally noteworthy as the oldest known welded truss bridge in the county.
Information and Findings From New Jersey's Historic Bridge Inventory
Discussion of Bridge
The totally welded 4-panel Warren with verticals pony truss bridge was constructed in 1937. It is supported on abutments that are random ashlar on the downstream side and concrete on the upstream side. Wingwalls are stone. All members are either H or I sections. The bridge is the earliest remaining all welded construction bridge in the county. The technology, which is still being used for truss bridges, was utilized by the railroads as early as 1928. The structure is the largest of all the welded truss bridges and has exceptionally deep floor beams. The structure does not convey the historic period and the rural context where welded truss bridges traditionally were built has been compromised. This structure is not individually eligible for listing in the National Register of Historic Places and does not contribute to an historic district.
Discussion of Surrounding Area
The bridge carries a 2-lane county road over a tributary of Back Brook. It is located in a wooded rural setting on a moderately traveled road. The land is used for agriculture.
Bridge Considered Historic By Survey: No
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