US Bridges

Halfmoon Bay Road over Mnrr Hu Line

Fair

Westchester County, New York · .5 MI SW JCT SH9A & Maple · Structure no. 000000002270050

Built
1987
38 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
168 ft
3 main spans
Daily traffic
2,143
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Halfmoon Bay Road over Mnrr Hu Line is a steel stringer/multi-beam or girder carrying Halfmoon Bay Road over Mnrr Hu Line in Westchester County, New York. It was built in 1987, so it is 38 years old, younger 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 2,143 vehicles a day, roughly 5% of them trucks, projected to reach 3,000 by 2041. The structure is 168 ft (51.2 m) long and 32 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesHalfmoon Bay Road
CrossesMnrr Hu Line
Location.5 MI SW JCT SH9A & Maple
CountyWestchester County
StateNew York
Coordinates41.19867, -73.88712
Functional classUrban Local

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38 US tons
Inventory rating38 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckNot applicable
Main spans3 (+2 approach)
Design loadHS 20
Structure length168 ft (51.2 m)
Longest span49 ft (14.9 m)
Deck width32 ft (9.8 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,143 (2021)
Projected traffic3,000 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedDeck replacement with only incidental widening
Estimated improvement cost$3.7 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Halfmoon Bay Road over Mnrr Hu Line built?

It was built in 1987, making it 38 years old in 2025.

What condition is Halfmoon Bay Road over Mnrr Hu Line 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 October 2023.

How much traffic does Halfmoon Bay Road over Mnrr Hu Line carry?

About 2,143 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Halfmoon Bay Road over Mnrr Hu Line?

The structure is 168 ft (51.2 m) long with a longest span of 49 ft (14.9 m) and a deck 32 ft wide.

Who owns Halfmoon Bay Road over Mnrr Hu Line?

It is owned by the Town or Township Highway Agency.