Structure 1075730 · Queens County, NY

RTE I678 over RTE I878 South Conduit

Carries RTE I678 over RTE I878 South Conduit, .3 Mi Sse RTE 678+rte 27.

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 FT289 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

289 ft end to end, longest span 100 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.

Built196759 years old
Length289.0 ft88.1 m
Last inspectedOctober 2024every 24 months

Location

StateNew York
CountyQueens
Location.3 Mi Sse RTE 678+rte 27
CarriesRTE I678
CrossesRTE I878 South Conduit
Coordinates40.66547, -73.79709

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length289.0 ft (88.1 m)
Max Span100.1 ft (30.5 m)
Deck Width45.3 ft (13.8 m)
Deck Area1215.8 sq m
Main Spans3
Year Built1967

Traffic

Truck Traffic8%
Lanes On Bridge3
Lanes Under Bridge5

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000001075730

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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