US Bridges

RTE 9 over Little Ausable River

Fair

Clinton County, New York · 3 MI E of Exit 35 of I87 · Structure no. 000000001005970

Built
1929
96 years old, rebuilt 1995
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
73 ft
1 main span
Daily traffic
2,162
2020 count
Owner
State
State Highway Agency

About this bridge

RTE 9 over Little Ausable River is a steel stringer/multi-beam or girder carrying RTE 9 over Little Ausable River in Clinton County, New York. It was built in 1929 and reconstructed in 1995, so it is 96 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 6 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 2,162 vehicles a day, roughly 6% of them trucks, projected to reach 2,175 by 2041. The structure is 73 ft (22.3 m) long and 38 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesRTE 9
CrossesLittle Ausable River
Location3 MI E of Exit 35 of I87
RouteU.S. Route 9
CountyClinton County
StateNew York
Coordinates44.57746, -73.44746
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.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating80 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length73 ft (22.3 m)
Longest span70 ft (21.3 m)
Deck width38 ft (11.6 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,162 (2020)
Projected traffic2,175 by 2041
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$1.8 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 9 over Little Ausable River built?

It was built in 1929, making it 96 years old in 2025. It was reconstructed in 1995.

What condition is RTE 9 over Little 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 June 2023.

How much traffic does RTE 9 over Little Ausable River carry?

About 2,162 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is RTE 9 over Little Ausable River?

The structure is 73 ft (22.3 m) long with a longest span of 70 ft (21.3 m) and a deck 38 ft wide.

Who owns RTE 9 over Little Ausable River?

It is owned by the State Highway Agency.