US Bridges

RTE I678 over RTE I878 South Conduit

Fair

Queens County, New York · .3 MI Sse RTE 678+RTE 27 · Structure no. 000000001075730

Built
1967
58 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
289 ft
3 main spans
Daily traffic
—
2015 count
Owner
State
State Highway Agency

About this bridge

RTE I678 over RTE I878 South Conduit is a steel stringer/multi-beam or girder carrying RTE I678 over RTE I878 South Conduit in Queens County, New York. It was built in 1967, so it is 58 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.

No traffic count is recorded. The structure is 289 ft (88.1 m) long and 45 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesRTE I678
CrossesRTE I878 South Conduit
Location.3 MI Sse RTE 678+RTE 27
RouteInterstate 678
CountyQueens County
StateNew York
Coordinates40.66547, -73.79709
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment6: Equal to present minimum criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length289 ft (88.1 m)
Longest span100 ft (30.5 m)
Deck width45 ft (13.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic—
Projected traffic—
Trucks8%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed2.5 mi (4 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$13.6 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was RTE I678 over RTE I878 South Conduit built?

It was built in 1967, making it 58 years old in 2025.

What condition is RTE I678 over RTE I878 South Conduit 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 2024.

How much traffic does RTE I678 over RTE I878 South Conduit carry?

No traffic count is recorded for this structure.

How long is RTE I678 over RTE I878 South Conduit?

The structure is 289 ft (88.1 m) long with a longest span of 100 ft (30.5 m) and a deck 45 ft wide.

Who owns RTE I678 over RTE I878 South Conduit?

It is owned by the State Highway Agency.