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Old State Road Bridge

Old State Road Bridge

Primary Photographer(s): Nathan Holth and Rick McOmber

Bridge Documented: April 14, 2011

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Facility Carried / Feature Intersected
Old State Road Over Ausable River
Location
Ausable Chasm: Clinton County, New York and Essex County, New York: United States
Construction Date and Builder / Engineer
By Builder/Contractor: Groton Bridge Company of Groton, New York
Rehabilitation Date
1975
Main Span Length
69.0 Feet (21 Meters)
Structure Length
136.0 Feet (41.5 Meters)
Roadway Width
15 Feet (4.57 Meters)
Spans
2 Main Span(s)
Inventory Number
3335960

Historic Significance Rating (HSR)
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Bridge Documentation

This bridge is a very rare example of a multi-span pin-connected pony truss that is continuous in design. Non-cantilever pin-connected truss bridges are exceedingly rare nationwide. The continuous design of this bridge is evident in the unusual design of the truss at the pier, where a large vertical post is located which has two pin connections. This post is where two separate end posts would be if simple truss spans were present. The center "end" post for this continuous bridge has another unusual feature in that it extends below the bottom chord like a bedstead truss, resting on the pier below. The pier itself is unusual since it is built right into a natural outcropping of rock. The overall surrounding setting is one of the most picturesque to be encountered as a waterfall is located immediately downstream. The waterfall and pony truss can be viewed from the nearby US-9 Bridge. This bridge has been closed to vehicular traffic, but the bridge retains good historic integrity. The bridge would be an excellent candidate for restoration for non-motorized use only in its existing location. The builder of this bridge is unknown, but it may be the product of the Groton Bridge and Manufacturing Company, prolific in the state, however there are not enough distinctive details to substantiate that suspicion. The National Register of Historic Places Multiple Property Submission that includes this bridge suggests a ca. 1890 construction date for the bridge.

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

View Historic Bridges of the AuSable River Valley National Register Multiple Property Submission

Above: Historical photo showing bridge construction ca. 1890. Photo Credit: Sara Perkett. The man on the far left is Pascal Perkett.

Above: Aerial view of bridge in August, 2020. Click for enlargement. Photo Credit: Small Town Drone.

Above: Aerial view of bridge in August, 2020. Click for enlargement. Photo Credit: Small Town Drone.

Above: Aerial view of bridge in August, 2020. Click for enlargement. Photo Credit: Small Town Drone.

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Photo Galleries and Videos: Old State Road Bridge

 

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Maps and Links: Old State Road Bridge

Coordinates (Latitude, Longitude):

Search For Additional Bridge Listings:

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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