Structure 2058380 · Suffolk County, NY

Dix Hills Road over Old Country RD

Carries Dix Hills Road over Old Country RD, 2.2 Mi NE Jct SH 231 + I4.

Overall conditionFair

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

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

Elevation

Side view, colored by inspection rating
CAR · 15 FT71 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

71 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 rigid-frame bridge.

Built194977 years old
Length70.9 ft21.6 m
Daily traffic2,994counted 2019
Last inspectedMarch 2024every 24 months

Location

StateNew York
CountySuffolk
Location2.2 Mi NE Jct SH 231 + I4
CarriesDix Hills Road
CrossesOld Country RD
Coordinates40.82554, -73.36469

Physical Characteristics

MaterialConcrete
DesignFrame
Total Length70.9 ft (21.6 m)
Max Span63.0 ft (19.2 m)
Deck Width43.0 ft (13.1 m)
Deck Area283.0 sq m
Main Spans1
Year Built1949

Traffic

Avg Daily Traffic2,994 (2019)
Truck Traffic2%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000002058380

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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