US Bridges

RTE I86 over Allegheny River

Fair

Cattaraugus County, New York · .3 MI E JCT I86 & SH 219 · Structure no. 000000006600179

Built
1987
38 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
768 ft
5 main spans
Daily traffic
11,973
2019 count
Owner
State
State Highway Agency

About this bridge

RTE I86 over Allegheny River is a steel continuous stringer/multi-beam or girder carrying RTE I86 over Allegheny River in Cattaraugus County, New York. It was built in 1987, so it is 38 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.

It carries about 11,973 vehicles a day, roughly 16% of them trucks, projected to reach 14,259 by 2041. The structure is 768 ft (234.1 m) long and 89 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesRTE I86
CrossesAllegheny River
Location.3 MI E JCT I86 & SH 219
RouteInterstate 86
CountyCattaraugus County
StateNew York
Coordinates42.08634, -78.61864
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.5 US tons
Inventory rating36.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length768 ft (234.1 m)
Longest span171 ft (52.1 m)
Deck width89 ft (27.1 m)
Roadway width83 ft (25.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,973 (2019)
Projected traffic14,259 by 2041
Trucks16%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$41.8 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE I86 over Allegheny River built?

It was built in 1987, making it 38 years old in 2025.

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 2023.

How much traffic does RTE I86 over Allegheny River carry?

About 11,973 vehicles per day (2019 count), of which roughly 16% are trucks.

How long is RTE I86 over Allegheny River?

The structure is 768 ft (234.1 m) long with a longest span of 171 ft (52.1 m) and a deck 89 ft wide.

Who owns RTE I86 over Allegheny River?

It is owned by the State Highway Agency.