US Bridges

Chestnut ST over RTE I90

Fair

Chautauqua County, New York · 3.0 MI W of Dunkirk Int · Structure no. 000000005511400

Built
1955
70 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
149 ft
3 main spans
Daily traffic
986
2020 count
Owner
Toll Authority
State Toll Authority

About this bridge

Chestnut ST over RTE I90 is a steel stringer/multi-beam or girder carrying Chestnut ST over RTE I90 in Chautauqua County, New York. It was built in 1955, so it is 70 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 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 986 vehicles a day, roughly 2% of them trucks, projected to reach 1,219 by 2041. The structure is 149 ft (45.4 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesChestnut ST
CrossesRTE I90
Location3.0 MI W of Dunkirk Int
CountyChautauqua County
StateNew York
Coordinates42.45615, -79.36248
Functional classUrban Collector

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
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
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73 US tons
Inventory rating43 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length149 ft (45.4 m)
Longest span60 ft (18.3 m)
Deck width31 ft (9.4 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic986 (2020)
Projected traffic1,219 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
Historic statusHistorical significance not determinable at this time
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$3.1 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Chestnut ST over RTE I90 built?

It was built in 1955, making it 70 years old in 2025.

What condition is Chestnut ST over RTE I90 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 May 2023.

How much traffic does Chestnut ST over RTE I90 carry?

About 986 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Chestnut ST over RTE I90?

The structure is 149 ft (45.4 m) long with a longest span of 60 ft (18.3 m) and a deck 31 ft wide.

Who owns Chestnut ST over RTE I90?

It is owned by the State Toll Authority.