Structure 6600050 · Cattaraugus County, NY

Main Street over Allegheny River

Carries Main Street over Allegheny River, Main ST City Of Salamanca.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT393 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

393 ft end to end, longest span 151 ft: about 5 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.

Built199036 years old
Length393.0 ft119.8 m
Daily traffic4,817counted 2020
Last inspectedSeptember 2023every 24 months

Location

StateNew York
CountyCattaraugus
LocationMain ST City Of Salamanca
CarriesMain Street
CrossesAllegheny River
Coordinates42.15635, -78.71564

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length393.0 ft (119.8 m)
Max Span150.9 ft (46 m)
Deck Width40.0 ft (12.2 m)
Deck Area1461.6 sq m
Main Spans3
Year Built1990

Traffic

Avg Daily Traffic4,817 (2020)
Truck Traffic4%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000006600050

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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