US Bridges

RTE I878 over RTE 907D South Conduit

Fair

Queens County, New York · 1.3 MI W JCT I678 & S Pkw · Structure no. 000000001076390

Built
1967
58 years old, rebuilt 2011
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
324 ft
3 main spans
Daily traffic
50,787
2020 count
Owner
State
State Highway Agency

About this bridge

RTE I878 over RTE 907D South Conduit is a steel continuous stringer/multi-beam or girder carrying RTE I878 over RTE 907D South Conduit in Queens County, New York. It was built in 1967 and reconstructed in 2011, 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.

It carries about 50,787 vehicles a day, roughly 5% of them trucks, projected to reach 62,620 by 2041. The structure is 324 ft (98.8 m) long and 45 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesRTE I878
CrossesRTE 907D South Conduit
Location1.3 MI W JCT I678 & S Pkw
RouteInterstate 878
CountyQueens County
StateNew York
Coordinates40.66461, -73.82765
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 inspectionApril 2023
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 alignment8: Equal to present desirable criteria
Operating rating53 US tons
Inventory rating32 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length324 ft (98.8 m)
Longest span126 ft (38.4 m)
Deck width45 ft (13.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deck14 ft (4.2 m)

Traffic and service

Average daily traffic50,787 (2020)
Projected traffic62,620 by 2041
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes

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$11.8 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was RTE I878 over RTE 907D South Conduit built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 2011.

What condition is RTE I878 over RTE 907D 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 April 2023.

How much traffic does RTE I878 over RTE 907D South Conduit carry?

About 50,787 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is RTE I878 over RTE 907D South Conduit?

The structure is 324 ft (98.8 m) long with a longest span of 126 ft (38.4 m) and a deck 45 ft wide.

Who owns RTE I878 over RTE 907D South Conduit?

It is owned by the State Highway Agency.