US Bridges

Seamans Neck Road over RTE 908M

Fair

Nassau County, New York · 0.1 MI W JCT SH 135 & Ssp · Structure no. 000000001059680

Built
1931
94 years old
Condition
Fair
inspected July 2023
Type
Arch - Deck
Concrete
Length
64 ft
1 main span
Daily traffic
3,130
2020 count
Owner
State
State Highway Agency

About this bridge

Seamans Neck Road over RTE 908M is a concrete arch - deck carrying Seamans Neck Road over RTE 908M in Nassau County, New York. It was built in 1931, so it is 94 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 3,130 vehicles a day, roughly 3% of them trucks, projected to reach 3,872 by 2041. The structure is 64 ft (19.5 m) long and 56 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

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CarriesSeamans Neck Road
CrossesRTE 908M
Location0.1 MI W JCT SH 135 & Ssp
RouteCounty Highway 0
CountyNassau County
StateNew York
Coordinates40.70101, -73.4925
Functional classUrban Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2023
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 geometry6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating60.5 US tons
Inventory rating22 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length64 ft (19.5 m)
Longest span57 ft (17.3 m)
Deck width56 ft (17.1 m)
Roadway width41 ft (12.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,130 (2020)
Projected traffic3,872 by 2041
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemNo

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$5.1 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Seamans Neck Road over RTE 908M built?

It was built in 1931, making it 94 years old in 2025.

What condition is Seamans Neck Road over RTE 908M 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 July 2023.

How much traffic does Seamans Neck Road over RTE 908M carry?

About 3,130 vehicles per day (2020 count), of which roughly 3% are trucks.

How long is Seamans Neck Road over RTE 908M?

The structure is 64 ft (19.5 m) long with a longest span of 57 ft (17.3 m) and a deck 56 ft wide.

Who owns Seamans Neck Road over RTE 908M?

It is owned by the State Highway Agency.