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Bridge Street Bridge

Piermont Bridge

Bridge Street Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: September 2, 2019

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Key Facts

Facility Carried / Feature Intersected
Bridge Street Over Sparkill Creek
Piermont: Rockland County, New York: United States
Structure Type
Metal 4 Panel Rivet-Connected Double-Intersection Warren Pony Truss, Movable: Single Leaf Bascule and Approach Spans: Metal 4 Panel Rivet-Connected Double-Intersection Warren Pony Truss, Fixed
Construction Date and Builder / Engineer
1880 By Builder/Contractor: King Bridge Company of Cleveland, Ohio

Technical Facts

Rehabilitation Date
Not Available or Not Applicable
Main Span Length
24 Feet (7.3 Meters)
Structure Length
46 Feet (14 Meters)
Roadway Width
16.7 Feet (5.09 Meters)
1 Main Span(s) and 1 Approach Span(s)
NBI Number

Historic Significance Rating (HSR)
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Bridge Documentation

This is the oldest known surviving bascule bridge in the United States and the only known example in the country of a simple archaic draw bridge design. As a movable bridge it is truly tiny, and would have only allowed very small boats to pass. The creek it is located on is also very small. Bridges of this design are more common in Europe. The bridge was hand-operated and simple counterweighted chains would wrap around the counterweight sheaves to pull the bascule leaf up. In this manner it resembles a medieval castle drawbridge. The bascule leaf and the approach span has riveted connections, making it an extremely early surviving rivet-connected truss bridge in the United States. The bridge has been bypassed and preserved in place for pedestrians. The bridge retains good historic integrity considering its age, although some rivets on the trusses have been replaced with bolts. The rivets that survive have a primitve appearance to them indicative of the early use of rivets. Because of its rarity and age it is one of the most unique and important historic bridges in the state. The bridge is worthy of consideration of National Register National Significance.

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