Structure 1069421 · Steuben County, NY

RTE 21 over Canisteo River

Carries RTE 21 over Canisteo River, 0.7 Mi N Jct Rts 36&21.

Overall conditionFair

Set by its lowest-rated component: Substructure at 5 of 9.

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating5/9 · Fair
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT440 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 5/9 · sets the rating

440 ft end to end, longest span 164 ft: about 6 semi-trucks nose to tail. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built197848 years old
Length440.0 ft134.1 m
Daily traffic7,105counted 2020
Last inspectedJuly 2024every 24 months

Location

StateNew York
CountySteuben
Location0.7 Mi N Jct Rts 36&21
CarriesRTE 21
CrossesCanisteo River
Coordinates42.33945, -77.66491

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length440.0 ft (134.1 m)
Max Span163.7 ft (49.9 m)
Deck Width44.0 ft (13.4 m)
Deck Area1796.9 sq m
Main Spans3
Year Built1978

Traffic

Avg Daily Traffic7,105 (2020)
Truck Traffic6%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000001069421

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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