Structure 2246720 · New York County, NY

Riverside Drive over West 158th Street Amtra

Carries Riverside Drive over West 158th Street Amtra, In NW Manhattan.

Overall conditionPoor

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

How ratings work
Deck5/9 · Fair
Superstructuresets the rating4/9 · Poor
Substructure5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,926 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 4/9 · sets the ratingSubstructure 5/9

1,926 ft end to end, longest span 69 ft: about 5.3 football fields. 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.

Built1927rebuilt 1985
Length1925.9 ft587 m
Daily traffic13,049counted 2018
Last inspectedDecember 2023every 12 months

Location

StateNew York
CountyNew York
LocationIn NW Manhattan
CarriesRiverside Drive
CrossesWest 158th Street Amtra
Coordinates40.83644, -73.94852

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length1925.9 ft (587 m)
Max Span68.9 ft (21 m)
Deck Width97.1 ft (29.6 m)
Deck Area17375.2 sq m
Main Spans39
Year Built1927 (reconstructed 1985)

Traffic

Avg Daily Traffic13,049 (2018)
Truck Traffic3%
Lanes On Bridge4
Lanes Under Bridge2

Inspection & Ownership

Last InspectionDecember 2023
Inspection FrequencyEvery 12 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000002246720

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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