US Bridges

RTE I678 over South Conduit Ave

Fair

Queens County, New York · JCT RTE 678+RTE 27 · Structure no. 000000001076489

Built
1948
77 years old
Condition
Fair
inspected May 2024
Type
Frame
Concrete
Length
65 ft
1 main span
Daily traffic
104,560
2019 count
Owner
State
State Highway Agency

About this bridge

RTE I678 over South Conduit Ave is a concrete frame carrying RTE I678 over South Conduit Ave in Queens County, New York. It was built in 1948, so it is 77 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 104,560 vehicles a day, roughly 5% of them trucks, projected to reach 133,606 by 2041. The structure is 65 ft (19.8 m) long and 130 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesRTE I678
CrossesSouth Conduit Ave
LocationJCT RTE 678+RTE 27
RouteInterstate 678
CountyQueens County
StateNew York
Coordinates40.6659, -73.80193
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.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating37 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length65 ft (19.8 m)
Longest span61 ft (18.5 m)
Deck width130 ft (39.6 m)
Roadway width99 ft (30.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic104,560 (2019)
Projected traffic133,606 by 2041
Trucks5%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$10.5 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was RTE I678 over South Conduit Ave built?

It was built in 1948, making it 77 years old in 2025.

What condition is RTE I678 over South Conduit Ave 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 May 2024.

How much traffic does RTE I678 over South Conduit Ave carry?

About 104,560 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is RTE I678 over South Conduit Ave?

The structure is 65 ft (19.8 m) long with a longest span of 61 ft (18.5 m) and a deck 130 ft wide.

Who owns RTE I678 over South Conduit Ave?

It is owned by the State Highway Agency.