US Bridges

Westchester Ave E over Mamaroneck River

Fair

Westchester County, New York · 3.0 MI W of Port Chester · Structure no. 000000003358540

Built
1962
63 years old
Condition
Fair
inspected May 2023
Type
Culvert
Concrete Continuous
Length
45 ft
2 main spans
Daily traffic
8,976
2016 count
Owner
County
County Highway Agency

About this bridge

Westchester Ave E over Mamaroneck River is a concrete continuous culvert carrying Westchester Ave E over Mamaroneck River in Westchester County, New York. It was built in 1962, so it is 63 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 8,976 vehicles a day, roughly 4% of them trucks, projected to reach 10,904 by 2041. The structure is 45 ft (13.7 m) long. If it were closed, the detour would be 2.5 mi (4 km).

Location

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CarriesWestchester Ave E
CrossesMamaroneck River
Location3.0 MI W of Port Chester
RouteCounty Highway 0
CountyWestchester County
StateNew York
Coordinates41.0159, -73.72511
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 inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating110.1 US tons
Inventory rating43 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length45 ft (13.7 m)
Longest span20 ft (6.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,976 (2016)
Projected traffic10,904 by 2041
Trucks4%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$2 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Westchester Ave E over Mamaroneck River built?

It was built in 1962, making it 63 years old in 2025.

What condition is Westchester Ave E 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 May 2023.

How much traffic does Westchester Ave E over Mamaroneck River carry?

About 8,976 vehicles per day (2016 count), of which roughly 4% are trucks.

How long is Westchester Ave E over Mamaroneck River?

The structure is 45 ft (13.7 m) long with a longest span of 20 ft (6.1 m).

Who owns Westchester Ave E over Mamaroneck River?

It is owned by the County Highway Agency.