Carpenter's Flats Bridge

(US-9 Ausable River Bridge)

NBI Information

Location

State: New York

County: Clinton County

Feature Carried: NY Route 9

Feature Crossed: Ausable River

Latitude, Longitude: 44.5586,-73.4486

Toll: On free road

Maintenance Responsibility: State Highway Agency

Structure Open, Posted, or Closed to Traffic: Open, no restriction

History

Year Built: 1940

Historical Significance: Bridge is on the National Register of Historic Places.

Year Reconstructed: 1994

Picture Date: June 22, 2023

Geometry

Lanes on Structure: 2

Lanes under Structure: 0

Skew: 0 degrees

Number of Main Spans: 1

Main Structure Type: Thru Truss

Main Structure Material: Steel

Number of Approach Spans: 0

Approach Structure Type: None

Approach Structure Material: None

Condition

Inspection Date: July 2021

Deck Condition: Satisfactory

Superstructure Condition: Fair

Substructure Condition: Satisfactory

Channel Condition: Fair

Culvert: Not Applicable

NBI Year: 2023

Bridge Information

The Carpenter's Flats Bridge, also called the US-9 Ausable River Bridge, is a rivet-connected polygonal Warren through truss. It was built in 1940, and is a standard example of New York State’s plan for truss bridges of this size, which were built in large quantities throughout the state. Some of these bridges have been preserved, while many of them have been replaced, which has made them increasingly uncommon. Fortunately, this is one of the bridges that has been preserved, as it is one of the largest bridges of this type, both in span length and deck width.

The bridge was rehabilitated in 1994 and is about to undergo another large rehabilitation project. In its current state, the bridge is very susceptible to ice jams, and has been damaged many times. Therefore, the bridge is being raised 3 feet 6 inches to increase the clearance above the Ausable River. In order to achieve this, there will also be modifications to the bridge abutments and the approach roadways. The project also includes upgrading the bridge railing, steel repairs, and repainting the structure. The bids were opened on April 6, 2023, and the bridge was closed on July 11th. Construction is expected to be finished in the fall.

This is the second bridge at this location. This first one was built in 1913 when the rising popularity of the automobile necessitated the construction of a bridge. However, the first bridge was not funded or constructed by the local towns (which is the typical approach). Instead, Ausable Chasm, a nearby tourist attraction, funded the bridge to make it easier for people to get to the park. It appears that their plan worked, because many people used the bridge. By the 1930’s, the increasing amount of automobile and truck traffic necessitated the replacement of the bridge with something more substantial, and it was replaced by the New York State Department of Public Works. The bridge was originally green, but it was repainted as part of a rehabilitation project in 1994.

References

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Carmine Liberta Memorial Bridge

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Chemung River Bridge (Bridge Street Bridge)