US Bridges

RTE 9B over Great Chazy River

Poor

Clinton County, New York · In Vill of Coopersville · Structure no. 000000001006270

Built
1930
95 years old, rebuilt 1991
Condition
Poor
inspected May 2023
Type
Truss - Thru
Steel
Length
115 ft
1 main span
Daily traffic
2,188
2020 count
Owner
State
State Highway Agency

About this bridge

RTE 9B over Great Chazy River is a steel truss - thru carrying RTE 9B over Great Chazy River in Clinton County, New York. It was built in 1930 and reconstructed in 1991, so it is 95 years old, older than the New York average of 53 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 2,188 vehicles a day, roughly 11% of them trucks, projected to reach 2,282 by 2041. The structure is 115 ft (35.1 m) long and 32 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

Open in Google Maps
CarriesRTE 9B
CrossesGreat Chazy River
LocationIn Vill of Coopersville
RouteState Highway 9B
CountyClinton County
StateNew York
Coordinates44.94235, -73.40902
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating47 US tons
Inventory rating28 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length115 ft (35.1 m)
Longest span110 ft (33.5 m)
Deck width32 ft (9.8 m)
Roadway width29 ft (8.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,188 (2020)
Projected traffic2,282 by 2041
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed5.6 mi (9 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$6 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 9B over Great Chazy River built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1991.

What condition is RTE 9B over Great Chazy River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2023.

How much traffic does RTE 9B over Great Chazy River carry?

About 2,188 vehicles per day (2020 count), of which roughly 11% are trucks.

How long is RTE 9B over Great Chazy River?

The structure is 115 ft (35.1 m) long with a longest span of 110 ft (33.5 m) and a deck 32 ft wide.

Who owns RTE 9B over Great Chazy River?

It is owned by the State Highway Agency.