US Bridges

RTE 98 over Ischua Creek

Fair

Cattaraugus County, New York · 0.2 MI W JCT Rts 98 + 16 · Structure no. 000000001035530

Built
1926
99 years old, rebuilt 1993
Condition
Fair
inspected May 2023
Type
Girder and Floorbeam System
Steel
Length
68 ft
1 main span
Daily traffic
1,493
2021 count
Owner
State
State Highway Agency

About this bridge

RTE 98 over Ischua Creek is a steel girder and floorbeam system carrying RTE 98 over Ischua Creek in Cattaraugus County, New York. It was built in 1926 and reconstructed in 1993, so it is 99 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 1,493 vehicles a day, roughly 9% of them trucks, projected to reach 1,507 by 2041. The structure is 68 ft (20.7 m) long and 28 ft wide. If it were closed, the detour would be 23 mi (37 km).

Location

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CarriesRTE 98
CrossesIschua Creek
Location0.2 MI W JCT Rts 98 + 16
RouteState Highway 98
CountyCattaraugus County
StateNew York
Coordinates42.32089, -78.46436
Functional classRural Major 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating32 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length68 ft (20.7 m)
Longest span63 ft (19.2 m)
Deck width28 ft (8.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,493 (2021)
Projected traffic1,507 by 2041
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed23 mi (37 km)
TollOn a free road
National Highway SystemNo

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$1.8 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 98 over Ischua Creek built?

It was built in 1926, making it 99 years old in 2025. It was reconstructed in 1993.

What condition is RTE 98 over Ischua Creek 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 RTE 98 over Ischua Creek carry?

About 1,493 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is RTE 98 over Ischua Creek?

The structure is 68 ft (20.7 m) long with a longest span of 63 ft (19.2 m) and a deck 28 ft wide.

Who owns RTE 98 over Ischua Creek?

It is owned by the State Highway Agency.