Structure 5500200 · Westchester County, NY

Mamaroneck Road over 907w907w87023012 RTE 90

Carries Mamaroneck Road over 907w907w87023012 RTE 90, 3.8 Mi NE Jct Rts Hrp<ccp.

Overall conditionFair

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

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

Elevation

Side view, colored by inspection rating
CAR · 15 FT76 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

76 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 rigid-frame bridge.

Built192799 years old
Length76.1 ft23.2 m
Daily traffic10,096counted 2020
Last inspectedMarch 2023every 24 months

Location

StateNew York
CountyWestchester
Location3.8 Mi NE Jct Rts Hrp<ccp
CarriesMamaroneck Road
Crosses907w907w87023012 RTE 90
Coordinates40.97691, -73.75858

Physical Characteristics

MaterialConcrete
DesignFrame
Total Length76.1 ft (23.2 m)
Max Span67.9 ft (20.7 m)
Deck Width50.9 ft (15.5 m)
Deck Area359.6 sq m
Main Spans1
Year Built1927

Traffic

Avg Daily Traffic10,096 (2020)
Truck Traffic2%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number000000005500200

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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