US Bridges

RTE I678 over H.Harding Exp W Flushin

Fair

Queens County, New York · JCT I495 & I678 · Structure no. 00000000105578C

Built
1963
62 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
1,287 ft
17 main spans
Daily traffic
26,907
2020 count
Owner
State
State Highway Agency

About this bridge

RTE I678 over H.Harding Exp W Flushin is a steel stringer/multi-beam or girder carrying RTE I678 over H.Harding Exp W Flushin in Queens County, New York. It was built in 1963, 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 26,907 vehicles a day, roughly 14% of them trucks, projected to reach 34,381 by 2041. The structure is 1,287 ft (392.3 m) long and 23 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesRTE I678
CrossesH.Harding Exp W Flushin
LocationJCT I495 & I678
RouteInterstate 678
CountyQueens County
StateNew York
Coordinates40.74392, -73.83824
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating30.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans17 (+12 approach)
Design loadHS 20
Structure length1,287 ft (392.3 m)
Longest span90 ft (27.4 m)
Deck width23 ft (7.1 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26,907 (2020)
Projected traffic34,381 by 2041
Trucks14%
Lanes on structure1
Traffic directionOne-way traffic
CarriesThird level (interchange)
CrossesHighway and waterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate 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$22.1 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE I678 over H.Harding Exp W Flushin built?

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

What condition is RTE I678 over H.Harding Exp W Flushin in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2023.

How much traffic does RTE I678 over H.Harding Exp W Flushin carry?

About 26,907 vehicles per day (2020 count), of which roughly 14% are trucks.

How long is RTE I678 over H.Harding Exp W Flushin?

The structure is 1,287 ft (392.3 m) long with a longest span of 90 ft (27.4 m) and a deck 23 ft wide.

Who owns RTE I678 over H.Harding Exp W Flushin?

It is owned by the State Highway Agency.