US Bridges

Hempstead Avenue over RTE 908M

Fair

Nassau County, New York · 3.3 MI E NYC Line on Ssp · Structure no. 000000001059400

Built
1929
96 years old
Condition
Fair
inspected July 2023
Type
Arch - Deck
Concrete
Length
69 ft
1 main span
Daily traffic
36,447
2020 count
Owner
State
State Highway Agency

About this bridge

Hempstead Avenue over RTE 908M is a concrete arch - deck carrying Hempstead Avenue over RTE 908M in Nassau County, New York. It was built in 1929, so it is 96 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 36,447 vehicles a day, roughly 2% of them trucks, projected to reach 44,275 by 2041. The structure is 69 ft (21 m) long and 62 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

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CarriesHempstead Avenue
CrossesRTE 908M
Location3.3 MI E NYC Line on Ssp
CountyNassau County
StateNew York
Coordinates40.68225, -73.66341
Functional classUrban Minor Arterial

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 evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.4 US tons
Inventory rating17.1 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length69 ft (21 m)
Longest span66 ft (20.1 m)
Deck width62 ft (18.9 m)
Roadway width45 ft (13.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic36,447 (2020)
Projected traffic44,275 by 2041
Trucks2%
Lanes on structure4
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$5.4 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Hempstead Avenue over RTE 908M built?

It was built in 1929, making it 96 years old in 2025.

What condition is Hempstead Avenue 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 Hempstead Avenue over RTE 908M carry?

About 36,447 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Hempstead Avenue over RTE 908M?

The structure is 69 ft (21 m) long with a longest span of 66 ft (20.1 m) and a deck 62 ft wide.

Who owns Hempstead Avenue over RTE 908M?

It is owned by the State Highway Agency.