US Bridges

RTE 21 over Canisteo River

Fair

Steuben County, New York · 0.7 MI N JCT Rts 36&21 · Structure no. 000000001069421

Built
1978
47 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
440 ft
3 main spans
Daily traffic
7,105
2020 count
Owner
State
State Highway Agency

About this bridge

RTE 21 over Canisteo River is a steel continuous stringer/multi-beam or girder carrying RTE 21 over Canisteo River in Steuben County, New York. It was built in 1978, so it is 47 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 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 7,105 vehicles a day, roughly 6% of them trucks, projected to reach 8,630 by 2041. The structure is 440 ft (134.1 m) long and 44 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesRTE 21
CrossesCanisteo River
Location0.7 MI N JCT Rts 36&21
RouteState Highway 21
CountySteuben County
StateNew York
Coordinates42.33945, -77.66491
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating59 US tons
Inventory rating35.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length440 ft (134.1 m)
Longest span164 ft (49.9 m)
Deck width44 ft (13.4 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,105 (2020)
Projected traffic8,630 by 2041
Trucks6%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$8.9 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 21 over Canisteo River built?

It was built in 1978, making it 47 years old in 2025.

What condition is RTE 21 over Canisteo 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 July 2024.

How much traffic does RTE 21 over Canisteo River carry?

About 7,105 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is RTE 21 over Canisteo River?

The structure is 440 ft (134.1 m) long with a longest span of 164 ft (49.9 m) and a deck 44 ft wide.

Who owns RTE 21 over Canisteo River?

It is owned by the State Highway Agency.