US Bridges

RTE 971H over Black River

PoorClosed to traffic

Jefferson County, New York · Located in Brownville · Structure no. 000000003338900

Built
1954
71 years old, rebuilt 2003
Condition
Poor
inspected June 2024
Type
Truss - Thru
Steel
Length
185 ft
1 main span
Daily traffic
6,232
2021 count
Owner
State
State Highway Agency

About this bridge

RTE 971H over Black River is a steel truss - thru carrying RTE 971H over Black River in Jefferson County, New York. It was built in 1954 and reconstructed in 2003, so it is 71 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. Its operating status is: closed to all traffic.

It carries about 6,232 vehicles a day, roughly 5% of them trucks, projected to reach 7,570 by 2041. The structure is 185 ft (56.4 m) long and 28 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesRTE 971H
CrossesBlack River
LocationLocated in Brownville
RouteState Highway 971H
Coordinates44.00061, -75.9815
Functional classUrban Minor Arterial

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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 12 months
Operating statusClosed to all traffic
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry0: Immediate repair necessary to put back in service
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating0 US tons
Inventory rating0 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckClosed grating
Main spans1
Design loadHS 20
Structure length185 ft (56.4 m)
Longest span180 ft (54.9 m)
Deck width28 ft (8.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck15 ft (4.6 m)

Traffic and service

Average daily traffic6,232 (2021)
Projected traffic7,570 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed5 mi (8 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 proposedDeck replacement with only incidental widening
Estimated improvement cost$4.9 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 971H over Black River built?

It was built in 1954, making it 71 years old in 2025. It was reconstructed in 2003.

What condition is RTE 971H over Black 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 June 2024.

How much traffic does RTE 971H over Black River carry?

About 6,232 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is RTE 971H over Black River?

The structure is 185 ft (56.4 m) long with a longest span of 180 ft (54.9 m) and a deck 28 ft wide.

Who owns RTE 971H over Black River?

It is owned by the State Highway Agency.