US Bridges

Osborn Road over Beaver Swamp Brk

Fair

Westchester County, New York · 1.5 MI NE Mamaroneck Rye · Structure no. 000000002265680

Built
1929
96 years old, rebuilt 2002
Condition
Fair
inspected March 2023
Type
Slab
Concrete
Length
24 ft
1 main span
Daily traffic
2,190
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Osborn Road over Beaver Swamp Brk is a concrete slab carrying Osborn Road over Beaver Swamp Brk in Westchester County, New York. It was built in 1929 and reconstructed in 2002, 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 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 2,190 vehicles a day, roughly 4% of them trucks, projected to reach 2,660 by 2041. The structure is 24 ft (7.3 m) long and 49 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesOsborn Road
CrossesBeaver Swamp Brk
Location1.5 MI NE Mamaroneck Rye
RouteCity Street 0
CountyWestchester County
StateNew York
Coordinates40.96924, -73.70545
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
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 adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.7 US tons
Inventory rating24.3 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length24 ft (7.3 m)
Longest span20 ft (6 m)
Deck width49 ft (14.9 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,190 (2020)
Projected traffic2,660 by 2041
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$1.1 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Osborn Road over Beaver Swamp Brk built?

It was built in 1929, making it 96 years old in 2025. It was reconstructed in 2002.

What condition is Osborn Road over Beaver Swamp Brk 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 March 2023.

How much traffic does Osborn Road over Beaver Swamp Brk carry?

About 2,190 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is Osborn Road over Beaver Swamp Brk?

The structure is 24 ft (7.3 m) long with a longest span of 20 ft (6 m) and a deck 49 ft wide.

Who owns Osborn Road over Beaver Swamp Brk?

It is owned by the City or Municipal Highway Agency.