US Bridges

RTE I678 over Boat Basin Place Flushi

Poor

Queens County, New York · JCT GCP+I678 · Structure no. 000000001055911

Built
1963
62 years old, rebuilt 1996
Condition
Poor
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
5,061 ft
70 main spans
Daily traffic
70,205
2008 count
Owner
State
State Highway Agency

About this bridge

RTE I678 over Boat Basin Place Flushi is a steel stringer/multi-beam or girder carrying RTE I678 over Boat Basin Place Flushi in Queens County, New York. It was built in 1963 and reconstructed in 1996, so it is 62 years old, older than the New York average of 53 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 70,205 vehicles a day, roughly 10% of them trucks. The structure is 5,061 ft (1,542.6 m) long and 48 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesRTE I678
CrossesBoat Basin Place Flushi
LocationJCT GCP+I678
RouteInterstate 678
Coordinates40.76611, -73.83921
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34.6 US tons
Inventory rating26.8 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans70 (+7 approach)
Design loadHS 20
Structure length5,061 ft (1,542.6 m)
Longest span174 ft (53 m)
Deck width48 ft (14.7 m)
Roadway width45 ft (13.7 m)
Vertical clearance over deck14 ft (4.4 m)

Traffic and service

Average daily traffic70,205 (2008)
Projected traffic—
Trucks10%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedDeck replacement with only incidental widening
Estimated improvement cost$180.6 million (2024 estimate)
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was RTE I678 over Boat Basin Place Flushi built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 1996.

What condition is RTE I678 over Boat Basin Place Flushi in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2023.

How much traffic does RTE I678 over Boat Basin Place Flushi carry?

About 70,205 vehicles per day (2008 count), of which roughly 10% are trucks.

How long is RTE I678 over Boat Basin Place Flushi?

The structure is 5,061 ft (1,542.6 m) long with a longest span of 174 ft (53 m) and a deck 48 ft wide.

Who owns RTE I678 over Boat Basin Place Flushi?

It is owned by the State Highway Agency.