Structure 105578J · Queens County, NY

RTE I678 over 25ax Flushing Bay Prome

Carries RTE I678 over 25ax Flushing Bay Prome, Jct I495 & I678.

Overall conditionGood

Set by its lowest-rated component: Deck and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructure9/9 · Excellent
Substructuresets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT2,990 FT OVERALL500 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 9/9Substructure 7/9 · sets the rating

2,990 ft end to end, longest span 306 ft: about 8.3 football fields. 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 box-beam bridge.

Built200917 years old
Length2990.2 ft911.4 m
Daily traffic—reported figure implausible
Last inspectedOctober 2023every 24 months

Location

StateNew York
CountyQueens
LocationJct I495 & I678
CarriesRTE I678
Crosses25ax Flushing Bay Prome
Coordinates40.76249, -73.83937

Physical Characteristics

MaterialSteel
DesignBox Beam - Multiple
Total Length2990.2 ft (911.4 m)
Max Span306.4 ft (93.4 m)
Deck Width42.3 ft (12.9 m)
Deck Area11757.1 sq m
Main Spans18
Year Built2009

Traffic

Avg Daily Traffic127,491 (2021)
That is about 63,745 vehicles per lane per day — beyond what any U.S. road carries (the busiest freeways run about 25,000–30,000). It is almost certainly a data-entry error in the National Bridge Inventory, so we leave this bridge out of traffic rankings.
Truck Traffic11%
Lanes On Bridge2
Lanes Under Bridge19

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number00000000105578J

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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