US Bridges

11th Ave Viaduct over LIRR West Side Yd

Fair

New York County, New York · In West Manhattan · Structure no. 000000002245010

Built
1934
91 years old, rebuilt 2010
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,403 ft
27 main spans
Daily traffic
14,480
2011 count
Owner
City
City or Municipal Highway Agency

About this bridge

11th Ave Viaduct over LIRR West Side Yd is a steel continuous stringer/multi-beam or girder carrying 11th Ave Viaduct over LIRR West Side Yd in New York County, New York. It was built in 1934 and reconstructed in 2010, so it is 91 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 5 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 14,480 vehicles a day, roughly 4% of them trucks, projected to reach 14,548 by 2041. The structure is 1,403 ft (427.6 m) long and 100 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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Carries11th Ave Viaduct
CrossesLIRR West Side Yd
LocationIn West Manhattan
RouteCity Street 0
CountyNew York County
StateNew York
Coordinates40.75568, -74.00209
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.7 US tons
Inventory rating26.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans27 (+7 approach)
Design loadUnknown
Structure length1,403 ft (427.6 m)
Longest span97 ft (29.6 m)
Deck width100 ft (30.5 m)
Roadway width70 ft (21.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,480 (2011)
Projected traffic14,548 by 2041
Trucks4%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedDeck replacement with only incidental widening
Estimated improvement cost$113.3 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was 11th Ave Viaduct over LIRR West Side Yd built?

It was built in 1934, making it 91 years old in 2025. It was reconstructed in 2010.

What condition is 11th Ave Viaduct over LIRR West Side Yd 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 December 2024.

How much traffic does 11th Ave Viaduct over LIRR West Side Yd carry?

About 14,480 vehicles per day (2011 count), of which roughly 4% are trucks.

How long is 11th Ave Viaduct over LIRR West Side Yd?

The structure is 1,403 ft (427.6 m) long with a longest span of 97 ft (29.6 m) and a deck 100 ft wide.

Who owns 11th Ave Viaduct over LIRR West Side Yd?

It is owned by the City or Municipal Highway Agency.