US Bridges

RTE I90 over William ST

Fair

Erie County, New York · 3.4 MI S JCT I90 <rte 130 · Structure no. 000000005512069

Built
1953
72 years old, rebuilt 1973
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
145 ft
3 main spans
Daily traffic
114,760
2019 count
Owner
Toll Authority
State Toll Authority

About this bridge

RTE I90 over William ST is a steel continuous stringer/multi-beam or girder carrying RTE I90 over William ST in Erie County, New York. It was built in 1953 and reconstructed in 1973, so it is 72 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 114,760 vehicles a day, roughly 10% of them trucks, projected to reach 128,611 by 2041. The structure is 145 ft (44.1 m) long and 113 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesRTE I90
CrossesWilliam ST
Location3.4 MI S JCT I90 <rte 130
RouteInterstate 90
CountyErie County
StateNew York
Coordinates42.88403, -78.76808
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55 US tons
Inventory rating33 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length145 ft (44.1 m)
Longest span67 ft (20.4 m)
Deck width113 ft (34.5 m)
Roadway width108 ft (32.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic114,760 (2019)
Projected traffic128,611 by 2041
Trucks10%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn an Interstate toll segment under Secretarial agreement
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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$11.5 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was RTE I90 over William ST built?

It was built in 1953, making it 72 years old in 2025. It was reconstructed in 1973.

What condition is RTE I90 over William ST 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 I90 over William ST carry?

About 114,760 vehicles per day (2019 count), of which roughly 10% are trucks.

How long is RTE I90 over William ST?

The structure is 145 ft (44.1 m) long with a longest span of 67 ft (20.4 m) and a deck 113 ft wide.

Who owns RTE I90 over William ST?

It is owned by the State Toll Authority.