US Bridges

Forsyth Road over 90IX RTE I90

Fair

Chautauqua County, New York · 4.8 MI SW Exit 60 of I90 · Structure no. 000000005511140

Built
1955
70 years old, rebuilt 1999
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
340 ft
6 main spans
Daily traffic
124
2019 count
Owner
Toll Authority
State Toll Authority

About this bridge

Forsyth Road over 90IX RTE I90 is a steel stringer/multi-beam or girder carrying Forsyth Road over 90IX RTE I90 in Chautauqua County, New York. It was built in 1955 and reconstructed in 1999, 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 124 vehicles a day, roughly 6% of them trucks, projected to reach 174 by 2039. The structure is 340 ft (103.6 m) long and 33 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

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CarriesForsyth Road
Crosses90IX RTE I90
Location4.8 MI SW Exit 60 of I90
CountyChautauqua County
StateNew York
Coordinates42.29833, -79.65792
Functional classRural Local

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating75.9 US tons
Inventory rating46 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans6
Design loadHS 25 or greater
Structure length340 ft (103.6 m)
Longest span64 ft (19.5 m)
Deck width33 ft (10.1 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic124 (2019)
Projected traffic174 by 2039
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed2.5 mi (4 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$6.8 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Forsyth Road over 90IX RTE I90 built?

It was built in 1955, making it 70 years old in 2025. It was reconstructed in 1999.

What condition is Forsyth Road over 90IX 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 July 2023.

How much traffic does Forsyth Road over 90IX RTE I90 carry?

About 124 vehicles per day (2019 count), of which roughly 6% are trucks.

How long is Forsyth Road over 90IX RTE I90?

The structure is 340 ft (103.6 m) long with a longest span of 64 ft (19.5 m) and a deck 33 ft wide.

Who owns Forsyth Road over 90IX RTE I90?

It is owned by the State Toll Authority.