US Bridges

RTE 907W over Mamaroneck River

Fair

Westchester County, New York · 0.1 MI N Hrp NB Int 14 · Structure no. 000000005500272

Built
1991
34 years old
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
80 ft
1 main span
Daily traffic
—
2000 count
Owner
State
State Highway Agency

About this bridge

RTE 907W over Mamaroneck River is a prestressed concrete box beam or girders - multiple carrying RTE 907W over Mamaroneck River in Westchester County, New York. It was built in 1991, so it is 34 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

No traffic count is recorded. The structure is 80 ft (24.4 m) long and 49 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesRTE 907W
CrossesMamaroneck River
Location0.1 MI N Hrp NB Int 14
CountyWestchester County
StateNew York
Coordinates40.99881, -73.72686
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56 US tons
Inventory rating26 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length80 ft (24.4 m)
Longest span76 ft (23.1 m)
Deck width49 ft (15 m)
Roadway width46 ft (14 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic—
Projected traffic—
Trucks2%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedDeck replacement with only incidental widening
Estimated improvement cost$2.3 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 907W over Mamaroneck River built?

It was built in 1991, making it 34 years old in 2025.

What condition is RTE 907W 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 September 2023.

How much traffic does RTE 907W over Mamaroneck River carry?

No traffic count is recorded for this structure.

How long is RTE 907W over Mamaroneck River?

The structure is 80 ft (24.4 m) long with a longest span of 76 ft (23.1 m) and a deck 49 ft wide.

Who owns RTE 907W over Mamaroneck River?

It is owned by the State Highway Agency.