US Bridges

White Plains Ave over Mamaroneck River

Fair

Westchester County, New York · 3.7 MI SE of Elmsford · Structure no. 000000003358520

Built
1957
68 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
9,713
2016 count
Owner
County
County Highway Agency

About this bridge

White Plains Ave over Mamaroneck River is a concrete continuous culvert carrying White Plains Ave over Mamaroneck River in Westchester County, New York. It was built in 1957, so it is 68 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 9,713 vehicles a day, roughly 4% of them trucks, projected to reach 11,799 by 2041. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesWhite Plains Ave
CrossesMamaroneck River
Location3.7 MI SE of Elmsford
RouteCounty Highway 0
CountyWestchester County
StateNew York
Coordinates41.03144, -73.74959
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating110.1 US tons
Inventory rating97 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadUnknown
Structure length26 ft (7.9 m)
Longest span12 ft (3.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,713 (2016)
Projected traffic11,799 by 2041
Trucks4%
Lanes on structure4
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

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$1.2 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was White Plains Ave over Mamaroneck River built?

It was built in 1957, making it 68 years old in 2025.

What condition is White Plains Ave over Mamaroneck River 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 White Plains Ave over Mamaroneck River carry?

About 9,713 vehicles per day (2016 count), of which roughly 4% are trucks.

How long is White Plains Ave over Mamaroneck River?

The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.6 m).

Who owns White Plains Ave over Mamaroneck River?

It is owned by the County Highway Agency.