US Bridges

Seamans Neck Road over RTE 908M

Good

Nassau County, New York · 0.1 MI W JCT SH 135 & Ssp · Structure no. 000000001057680

Built
1957
68 years old
Condition
Good
inspected July 2023
Type
Arch - Deck
Concrete
Length
74 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 1957, so it is 68 years old, older than the New York average of 53 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,130 vehicles a day, roughly 3% of them trucks, projected to reach 3,872 by 2041. The structure is 74 ft (22.6 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
Coordinates40.70131, -73.49248
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating94.9 US tons
Inventory rating32.4 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length74 ft (22.6 m)
Longest span69 ft (21 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$6 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Seamans Neck Road over RTE 908M built?

It was built in 1957, making it 68 years old in 2025.

What condition is Seamans Neck Road over RTE 908M in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. 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 74 ft (22.6 m) long with a longest span of 69 ft (21 m) and a deck 56 ft wide.

Who owns Seamans Neck Road over RTE 908M?

It is owned by the State Highway Agency.