US Bridges

RTE I86 over RTE 417 Allegheny River

Fair

Cattaraugus County, New York · 6 MI W JCT SH 16 & SH 417 · Structure no. 000000001073791

Built
1988
37 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,941 ft
13 main spans
Daily traffic
6,049
2014 count
Owner
State
State Highway Agency

About this bridge

RTE I86 over RTE 417 Allegheny River is a steel continuous stringer/multi-beam or girder carrying RTE I86 over RTE 417 Allegheny River in Cattaraugus 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 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 6,049 vehicles a day, roughly 17% of them trucks, projected to reach 8,469 by 2034. The structure is 1,941 ft (591.6 m) long and 43 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesRTE I86
CrossesRTE 417 Allegheny River
Location6 MI W JCT SH 16 & SH 417
RouteInterstate 86
CountyCattaraugus County
StateNew York
Coordinates42.10146, -78.52239
Functional classUrban 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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80 US tons
Inventory rating48 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans13
Design loadHS 20
Structure length1,941 ft (591.6 m)
Longest span180 ft (54.8 m)
Deck width43 ft (13 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,049 (2014)
Projected traffic8,469 by 2034
Trucks17%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway, waterway and railroad
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$48.8 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE I86 over RTE 417 Allegheny River built?

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

What condition is RTE I86 over RTE 417 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 September 2024.

How much traffic does RTE I86 over RTE 417 Allegheny River carry?

About 6,049 vehicles per day (2014 count), of which roughly 17% are trucks.

How long is RTE I86 over RTE 417 Allegheny River?

The structure is 1,941 ft (591.6 m) long with a longest span of 180 ft (54.8 m) and a deck 43 ft wide.

Who owns RTE I86 over RTE 417 Allegheny River?

It is owned by the State Highway Agency.