Structure 1056369 · Suffolk County, NY

County Route 31 over 27 27 0705 1437 RTE 27

Carries County Route 31 over 27 27 0705 1437 RTE 27, 20 Mi E Rts 112+27.

Overall conditionFair

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

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

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT281 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

281 ft end to end, longest span 138 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.

Built1971rebuilt 2011
Length280.8 ft85.6 m
Daily traffic16,256counted 2020
Last inspectedOctober 2023every 24 months

Location

StateNew York
CountySuffolk
Location20 Mi E Rts 112+27
CarriesCounty Route 31
Crosses27 27 0705 1437 RTE 27
Coordinates40.86807, -72.64418

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length280.8 ft (85.6 m)
Max Span137.8 ft (42 m)
Deck Width103.0 ft (31.4 m)
Deck Area2687.8 sq m
Main Spans2
Year Built1971 (reconstructed 2011)

Traffic

Avg Daily Traffic16,256 (2020)
Truck Traffic10%
Lanes On Bridge6
Lanes Under Bridge6

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000001056369

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.

Nearby Bridges