Structure 5512411 · Erie County, NY

RTE I90 over Eighteen Mile Creek Sha

Carries RTE I90 over Eighteen Mile Creek Sha, 2.7 Mi. NE Of Int.57a.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructure6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT638 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 6/9

638 ft end to end, longest span 150 ft: about 1.8 football fields. 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 girder bridge.

Built1957rebuilt 2012
Length638.1 ft194.5 m
Daily traffic14,697counted 2014
Last inspectedSeptember 2024every 24 months

Location

StateNew York
CountyErie
Location2.7 Mi. NE Of Int.57a
CarriesRTE I90
CrossesEighteen Mile Creek Sha
Coordinates42.69243, -78.93221

Physical Characteristics

MaterialSteel
DesignGirder and Floorbeam
Total Length638.1 ft (194.5 m)
Max Span149.9 ft (45.7 m)
Deck Width56.1 ft (17.1 m)
Deck Area3325.9 sq m
Main Spans5
Year Built1957 (reconstructed 2012)

Traffic

Avg Daily Traffic14,697 (2014)
Truck Traffic22%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Toll Authority
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number000000005512411

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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