Structure 1064230 · Suffolk County, NY

Ryerson AVE over 495i 495i 0704 1342 RTE

Carries Ryerson AVE over 495i 495i 0704 1342 RTE, 9.5 Mi E Rts 112+495.

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
SEMI-TRUCK · 72 FT254 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

254 ft end to end, longest span 86 ft: about 4 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.

Built197056 years old
Length253.9 ft77.4 m
Daily traffic965counted 2021
Last inspectedNovember 2023every 24 months

Location

StateNew York
CountySuffolk
Location9.5 Mi E Rts 112+495
CarriesRyerson AVE
Crosses495i 495i 0704 1342 RTE
Coordinates40.86827, -72.80949

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length253.9 ft (77.4 m)
Max Span86.0 ft (26.2 m)
Deck Width40.0 ft (12.2 m)
Deck Area944.3 sq m
Main Spans4
Year Built1970

Traffic

Avg Daily Traffic965 (2021)
Truck Traffic5%
Lanes On Bridge2
Lanes Under Bridge6

Inspection & Ownership

Last InspectionNovember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000001064230

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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