US Bridges

RTE 971L over N B Grt Chazy Rvr

FairPosted for load

Clinton County, New York · 2.3 Mi. SW of Ellenburg D · Structure no. 000000001039640

Built
1988
37 years old
Condition
Fair
inspected November 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
67 ft
1 main span
Daily traffic
3,308
2020 count
Owner
State
State Highway Agency

About this bridge

RTE 971L over N B Grt Chazy Rvr is a prestressed concrete box beam or girders - multiple carrying RTE 971L over N B Grt Chazy Rvr in Clinton County, New York. It was built in 1988, so it is 37 years old, younger 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. Its operating status is: posted for other load-capacity restriction.

It carries about 3,308 vehicles a day, roughly 12% of them trucks, projected to reach 3,339 by 2041. The structure is 67 ft (20.4 m) long and 43 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesRTE 971L
CrossesN B Grt Chazy Rvr
Location2.3 Mi. SW of Ellenburg D
RouteState Highway 971L
Coordinates44.89159, -73.84121
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64 US tons
Inventory rating29 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length67 ft (20.4 m)
Longest span62 ft (18.8 m)
Deck width43 ft (13.2 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,308 (2020)
Projected traffic3,339 by 2041
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemYes

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 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 971L over N B Grt Chazy Rvr built?

It was built in 1988, making it 37 years old in 2025.

What condition is RTE 971L over N B Grt Chazy Rvr 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 November 2024.

How much traffic does RTE 971L over N B Grt Chazy Rvr carry?

About 3,308 vehicles per day (2020 count), of which roughly 12% are trucks.

How long is RTE 971L over N B Grt Chazy Rvr?

The structure is 67 ft (20.4 m) long with a longest span of 62 ft (18.8 m) and a deck 43 ft wide.

Who owns RTE 971L over N B Grt Chazy Rvr?

It is owned by the State Highway Agency.