US Bridges

West Shore Road over Mill Neck Creek

Fair

Nassau County, New York · At Bayville · Structure no. 000000003300010

Built
1938
87 years old, rebuilt 2024
Condition
Fair
inspected June 2024
Type
Movable - Bascule
Steel
Length
541 ft
1 main span
Daily traffic
11,399
2020 count
Owner
County
County Highway Agency

About this bridge

West Shore Road over Mill Neck Creek is a steel movable - bascule carrying West Shore Road over Mill Neck Creek in Nassau County, New York. It was built in 1938 and reconstructed in 2024, so it is 87 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 5 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 11,399 vehicles a day, roughly 3% of them trucks, projected to reach 13,847 by 2041. The structure is 541 ft (164.9 m) long and 42 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

Open in Google Maps
CarriesWest Shore Road
CrossesMill Neck Creek
LocationAt Bayville
RouteCounty Highway 0
CountyNassau County
StateNew York
Coordinates40.90345, -73.54864
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.4 US tons
Inventory rating27 US tons

Structure

Structure typeMovable - Bascule
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+7 approach)
Design loadH 20
Structure length541 ft (164.9 m)
Longest span104 ft (31.7 m)
Deck width42 ft (12.9 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,399 (2020)
Projected traffic13,847 by 2041
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed5.6 mi (9 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$42 million (2024 estimate)
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was West Shore Road over Mill Neck Creek built?

It was built in 1938, making it 87 years old in 2025. It was reconstructed in 2024.

What condition is West Shore Road over Mill Neck Creek 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 June 2024.

How much traffic does West Shore Road over Mill Neck Creek carry?

About 11,399 vehicles per day (2020 count), of which roughly 3% are trucks.

How long is West Shore Road over Mill Neck Creek?

The structure is 541 ft (164.9 m) long with a longest span of 104 ft (31.7 m) and a deck 42 ft wide.

Who owns West Shore Road over Mill Neck Creek?

It is owned by the County Highway Agency.