Structure 1036360 · Niagara County, NY

RTE 104 over RTE 957a 957a957a540140

Carries RTE 104 over RTE 957a 957a957a540140, 0.3 Mi N Jct Rts 104 & 18.

Overall conditionFair

Set by its lowest-rated component: Superstructure and Substructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT290 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

290 ft end to end, longest span 141 ft: about 4 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.

Built1965rebuilt 1994
Length290.0 ft88.4 m
Daily traffic12,154counted 2018
Last inspectedSeptember 2023every 24 months

Location

StateNew York
CountyNiagara
Location0.3 Mi N Jct Rts 104 & 18
CarriesRTE 104
CrossesRTE 957a 957a957a540140
Coordinates43.17001, -79.03013

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length290.0 ft (88.4 m)
Max Span140.7 ft (42.9 m)
Deck Width33.5 ft (10.2 m)
Deck Area901.7 sq m
Main Spans2
Year Built1965 (reconstructed 1994)

Traffic

Avg Daily Traffic12,154 (2018)
Truck Traffic4%
Lanes On Bridge2
Lanes Under Bridge5

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000001036360

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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