Structure 124009C · Bronx County, NY

RTE I87 over Relief

Carries RTE I87 over Relief, Macombs Dam Park.

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
SEMI-TRUCK · 72 FT162 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

162 ft end to end, longest span 46 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.

Built1951rebuilt 2002
Length162.1 ft49.4 m
Daily traffic30,711counted 2019
Last inspectedMay 2024every 24 months

Location

StateNew York
CountyBronx
LocationMacombs Dam Park
CarriesRTE I87
CrossesRelief
Coordinates40.82833, -73.93096

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length162.1 ft (49.4 m)
Max Span45.9 ft (14 m)
Deck Width49.5 ft (15.1 m)
Deck Area745.9 sq m
Main Spans4
Year Built1951 (reconstructed 2002)

Traffic

Avg Daily Traffic30,711 (2019)
Truck Traffic6%
Lanes On Bridge1

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number00000000124009C

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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