US Bridges

Nassau Road over RTE 908M

Good

Nassau County, New York · 4 MI W JCT Ssp + Wsp · Structure no. 000000001520260

Built
1956
69 years old, rebuilt 2017
Condition
Good
inspected November 2024
Type
Arch - Deck
Concrete
Length
70 ft
1 main span
Daily traffic
25,098
2019 count
Owner
State
State Highway Agency

About this bridge

Nassau Road over RTE 908M is a concrete arch - deck carrying Nassau Road over RTE 908M in Nassau County, New York. It was built in 1956 and reconstructed in 2017, so it is 69 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 25,098 vehicles a day, roughly 3% of them trucks, projected to reach 30,489 by 2041. The structure is 70 ft (21.3 m) long and 80 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesNassau Road
CrossesRTE 908M
Location4 MI W JCT Ssp + Wsp
RouteCounty Highway 0
Coordinates40.6869, -73.59448
Functional classUrban Minor Arterial

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.
Substructure7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.9 US tons
Inventory rating21.6 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length70 ft (21.3 m)
Longest span69 ft (21 m)
Deck width80 ft (24.4 m)
Roadway width60 ft (18.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,098 (2019)
Projected traffic30,489 by 2041
Trucks3%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 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$8 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Nassau Road over RTE 908M built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 2017.

What condition is Nassau 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 November 2024.

How much traffic does Nassau Road over RTE 908M carry?

About 25,098 vehicles per day (2019 count), of which roughly 3% are trucks.

How long is Nassau Road over RTE 908M?

The structure is 70 ft (21.3 m) long with a longest span of 69 ft (21 m) and a deck 80 ft wide.

Who owns Nassau Road over RTE 908M?

It is owned by the State Highway Agency.