US Bridges

RTE 908M over Hempstead Lake

Good

Nassau County, New York · 4.6 MI E Ny City Line - S · Structure no. 000000001059459

Built
1946
79 years old
Condition
Good
inspected September 2024
Type
Frame
Concrete
Length
24 ft
1 main span
Daily traffic
160,996
2018 count
Owner
State
State Highway Agency

About this bridge

RTE 908M over Hempstead Lake is a concrete frame carrying RTE 908M over Hempstead Lake in Nassau County, New York. It was built in 1946, so it is 79 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 160,996 vehicles a day, projected to reach 191,504 by 2041. The structure is 24 ft (7.3 m) long and 155 ft wide.

CarriesRTE 908M
CrossesHempstead Lake
Location4.6 MI E Ny City Line - S
RouteState Highway 908M
Coordinates40.68616, -73.6411
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81.7 US tons
Inventory rating36 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckNot applicable
Main spans1
Design loadH 20
Structure length24 ft (7.3 m)
Longest span20 ft (6 m)
Deck width155 ft (47.2 m)
Roadway width85 ft (25.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic160,996 (2018)
Projected traffic191,504 by 2041
Trucks0%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed—
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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$5.2 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 908M over Hempstead Lake built?

It was built in 1946, making it 79 years old in 2025.

What condition is RTE 908M over Hempstead Lake 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 September 2024.

How much traffic does RTE 908M over Hempstead Lake carry?

About 160,996 vehicles per day (2018 count).

How long is RTE 908M over Hempstead Lake?

The structure is 24 ft (7.3 m) long with a longest span of 20 ft (6 m) and a deck 155 ft wide.

Who owns RTE 908M over Hempstead Lake?

It is owned by the State Highway Agency.