US Bridges

RTE 908J over Fire Island Inlet

FairPosted for load

Suffolk County, New York · At Fire Island Inlet · Structure no. 000000001058770

Built
1962
63 years old, rebuilt 2001
Condition
Fair
inspected May 2024
Type
Truss - Thru
Steel
Length
4,234 ft
3 main spans
Daily traffic
2,691
2019 count
Owner
State
State Highway Agency

About this bridge

RTE 908J over Fire Island Inlet is a steel truss - thru carrying RTE 908J over Fire Island Inlet in Suffolk County, New York. It was built in 1962 and reconstructed in 2001, so it is 63 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. Its operating status is: posted for other load-capacity restriction.

It carries about 2,691 vehicles a day, roughly 6% of them trucks, projected to reach 3,200 by 2041. The structure is 4,234 ft (1,290.5 m) long and 32 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesRTE 908J
CrossesFire Island Inlet
LocationAt Fire Island Inlet
RouteState Highway 908J
Coordinates40.62522, -73.26187
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36 US tons
Inventory rating22 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans3 (+24 approach)
Design loadHS 20
Structure length4,234 ft (1,290.5 m)
Longest span600 ft (182.9 m)
Deck width32 ft (9.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deck16 ft (5 m)

Traffic and service

Average daily traffic2,691 (2019)
Projected traffic3,200 by 2041
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 proposedDeck replacement with only incidental widening
Estimated improvement cost$118.4 million (2024 estimate)
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was RTE 908J over Fire Island Inlet built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 2001.

What condition is RTE 908J over Fire Island Inlet 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 908J over Fire Island Inlet carry?

About 2,691 vehicles per day (2019 count), of which roughly 6% are trucks.

How long is RTE 908J over Fire Island Inlet?

The structure is 4,234 ft (1,290.5 m) long with a longest span of 600 ft (182.9 m) and a deck 32 ft wide.

Who owns RTE 908J over Fire Island Inlet?

It is owned by the State Highway Agency.