Structure 1015410 · Chautauqua County, NY

RTE 20 over 90ix RTE I90

Carries RTE 20 over 90ix RTE I90, Jct RT 20 + I-90.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT245 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

245 ft end to end, longest span 75 ft: about 3 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.

Built1956rebuilt 2013
Length245.1 ft74.7 m
Daily traffic4,579counted 2020
Last inspectedOctober 2023every 24 months

Location

StateNew York
CountyChautauqua
LocationJct RT 20 + I-90
CarriesRTE 20
Crosses90ix RTE I90
Coordinates42.51242, -79.18919

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length245.1 ft (74.7 m)
Max Span75.1 ft (22.9 m)
Deck Width43.0 ft (13.1 m)
Deck Area978.6 sq m
Main Spans4
Year Built1956 (reconstructed 2013)

Traffic

Avg Daily Traffic4,579 (2020)
Truck Traffic6%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Toll Authority
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number000000001015410

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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