Structure 2265250 · Westchester County, NY

Hillside Avenue over Mnrr Nh Line

Carries Hillside Avenue over Mnrr Nh Line, At Mamaroneck Rye.

Overall conditionPoor

Set by its lowest-rated component: Superstructure and Substructure at 4 of 9.

How ratings work
Deck8/9 · Very Good
Superstructuresets the rating4/9 · Poor
Substructuresets the rating4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT63 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 4/9 · sets the ratingSubstructure 4/9 · sets the rating

63 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 through truss.

Built1887rebuilt 2015
Length63.0 ft19.2 m
Daily traffic1,751counted 2017
Last inspectedDecember 2024every 12 months

Location

StateNew York
CountyWestchester
LocationAt Mamaroneck Rye
CarriesHillside Avenue
CrossesMnrr Nh Line
Coordinates40.95680, -73.73296

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length63.0 ft (19.2 m)
Max Span56.1 ft (17.1 m)
Deck Width32.2 ft (9.8 m)
Deck Area188.2 sq m
Main Spans1
Year Built1887 (reconstructed 2015)

Traffic

Avg Daily Traffic1,751 (2017)
Truck Traffic2%
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 12 months
OwnerRailroad
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number000000002265250

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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