Structure 1064940 · Niagara County, NY

RTE 951a over 87th Street

Carries RTE 951a over 87th Street, 1.5 Mi E Jct RT 951a&190i.

Overall conditionGood

Set by its lowest-rated component: Deck and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT93 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

93 ft end to end. Lengths and the car 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.

Built197056 years old
Length92.8 ft28.3 m
Daily traffic1,858counted 2019
Last inspectedApril 2023every 24 months

Location

StateNew York
CountyNiagara
Location1.5 Mi E Jct RT 951a&190i
CarriesRTE 951a
Crosses87th Street
Coordinates43.07851, -78.96381

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length92.8 ft (28.3 m)
Max Span87.9 ft (26.8 m)
Deck Width25.9 ft (7.9 m)
Deck Area223.6 sq m
Main Spans1
Year Built1970

Traffic

Avg Daily Traffic1,858 (2019)
Truck Traffic3%
Lanes On Bridge1
Lanes Under Bridge2

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000001064940

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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