Structure 1057100 · Nassau County, NY

RTE 906a over RTE I495

Carries RTE 906a over RTE I495, 0.5m E Jct Rts106&liessr.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT69 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

69 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 box-beam bridge.

Built199036 years old
Length68.9 ft21 m
Daily traffic1,860counted 2020
Last inspectedAugust 2023every 24 months

Location

StateNew York
CountyNassau
Location0.5m E Jct Rts106&liessr
CarriesRTE 906a
CrossesRTE I495
Coordinates40.78671, -73.52545

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length68.9 ft (21 m)
Max Span66.9 ft (20.4 m)
Deck Width41.3 ft (12.6 m)
Deck Area264.6 sq m
Main Spans1
Year Built1990

Traffic

Avg Daily Traffic1,860 (2020)
Truck Traffic3%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000001057100

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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