Structure 1520200 · Nassau County, NY

Hempstead Avenue over RTE 908m

Carries Hempstead Avenue over RTE 908m, 3.3 Mi E Nyc Line On Ssp.

Overall conditionFair

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

How ratings work
Superstructuresets the rating6/9 · Satisfactory
Substructure8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT76 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck not ratedSuperstructure 6/9 · sets the ratingSubstructure 8/9

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 deck arch.

Built195670 years old
Length76.1 ft23.2 m
Daily traffic36,447counted 2020
Last inspectedMarch 2023every 24 months

Location

StateNew York
CountyNassau
Location3.3 Mi E Nyc Line On Ssp
CarriesHempstead Avenue
CrossesRTE 908m
Coordinates40.68252, -73.66333

Physical Characteristics

MaterialConcrete
DesignArch - Deck
Total Length76.1 ft (23.2 m)
Max Span70.9 ft (21.6 m)
Deck Width62.0 ft (18.9 m)
Deck Area438.5 sq m
Main Spans1
Year Built1956

Traffic

Avg Daily Traffic36,447 (2020)
Truck Traffic2%
Lanes On Bridge4
Lanes Under Bridge4

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000001520200

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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