US Bridges

RTE 9 over Ausable River

Fair

Clinton County, New York · 4.6 MI N JCT US 9 & SH 22 · Structure no. 000000001005950

Built
1940
85 years old, rebuilt 2023
Condition
Fair
inspected December 2023
Type
Truss - Thru
Steel
Length
260 ft
1 main span
Daily traffic
2,158
2020 count
Owner
State
State Highway Agency

About this bridge

RTE 9 over Ausable River is a steel truss - thru carrying RTE 9 over Ausable River in Clinton County, New York. It was built in 1940 and reconstructed in 2023, so it is 85 years old, older than the New York average of 53 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 2,158 vehicles a day, roughly 7% of them trucks, projected to reach 2,171 by 2041. The structure is 260 ft (79.2 m) long and 45 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesRTE 9
CrossesAusable River
Location4.6 MI N JCT US 9 & SH 22
RouteU.S. Route 9
CountyClinton County
StateNew York
Coordinates44.55859, -73.44864
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68 US tons
Inventory rating41 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length260 ft (79.2 m)
Longest span255 ft (77.7 m)
Deck width45 ft (13.8 m)
Roadway width42 ft (12.9 m)
Vertical clearance over deck15 ft (4.6 m)

Traffic and service

Average daily traffic2,158 (2020)
Projected traffic2,171 by 2041
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$14.3 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 9 over Ausable River built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 2023.

What condition is RTE 9 over Ausable River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in December 2023.

How much traffic does RTE 9 over Ausable River carry?

About 2,158 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is RTE 9 over Ausable River?

The structure is 260 ft (79.2 m) long with a longest span of 255 ft (77.7 m) and a deck 45 ft wide.

Who owns RTE 9 over Ausable River?

It is owned by the State Highway Agency.