US Bridges

RTE I86 over Allegheny River

Fair

Cattaraugus County, New York · 0.4 MI W JCT 17 + RTE 280 · Structure no. 000000006062762

Built
1965
60 years old, rebuilt 2014
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
609 ft
4 main spans
Daily traffic
4,720
2020 count
Owner
State
State Highway Agency

About this bridge

RTE I86 over Allegheny River is a steel stringer/multi-beam or girder carrying RTE I86 over Allegheny River in Cattaraugus County, New York. It was built in 1965 and reconstructed in 2014, so it is 60 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 4,720 vehicles a day, roughly 28% of them trucks, projected to reach 5,621 by 2041. The structure is 609 ft (185.6 m) long and 36 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesRTE I86
CrossesAllegheny River
Location0.4 MI W JCT 17 + RTE 280
RouteInterstate 86
CountyCattaraugus County
StateNew York
Coordinates42.10002, -78.86107
Functional classRural Principal Arterial - Interstate

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.4 US tons
Inventory rating47.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length609 ft (185.6 m)
Longest span150 ft (45.7 m)
Deck width36 ft (11 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,720 (2020)
Projected traffic5,621 by 2041
Trucks28%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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$12.2 million (2024 estimate)
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was RTE I86 over Allegheny River built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 2014.

What condition is RTE I86 over Allegheny 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 October 2024.

How much traffic does RTE I86 over Allegheny River carry?

About 4,720 vehicles per day (2020 count), of which roughly 28% are trucks.

How long is RTE I86 over Allegheny River?

The structure is 609 ft (185.6 m) long with a longest span of 150 ft (45.7 m) and a deck 36 ft wide.

Who owns RTE I86 over Allegheny River?

It is owned by the State Highway Agency.