Structure 5500739 · Westchester County, NY

RTE 987d over Saw Mill River

Carries RTE 987d over Saw Mill River, .3 Mi N Jct Smrp & I87.

Overall conditionGood

Set by its lowest-rated component: Deck and Substructure at 8 of 9.

How ratings work
Decksets the rating8/9 · Very Good
Superstructure9/9 · Excellent
Substructuresets the rating8/9 · Very Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT152 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9 · sets the ratingSuperstructure 9/9Substructure 8/9 · sets the rating

152 ft end to end, longest span 60 ft: about 2 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.

Built20197 years old
Length151.9 ft46.3 m
Daily traffic29,010counted 2021
Last inspectedJuly 2023every 24 months

Location

StateNew York
CountyWestchester
Location.3 Mi N Jct Smrp & I87
CarriesRTE 987d
CrossesSaw Mill River
Coordinates41.04613, -73.83196

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length151.9 ft (46.3 m)
Max Span60.0 ft (18.3 m)
Deck Width82.3 ft (25.1 m)
Deck Area1162.1 sq m
Main Spans3
Year Built2019

Traffic

Avg Daily Traffic29,010 (2021)
Truck Traffic1%
Lanes On Bridge5

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number000000005500739

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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