US Bridges

RTE 907W over Mamaroneck River

Good

Westchester County, New York · 0.7 MI S Jcts Hrp & RT127 · Structure no. 000000001074431

Built
1991
34 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
144 ft
1 main span
Daily traffic
—
2000 count
Owner
State
State Highway Agency

About this bridge

RTE 907W over Mamaroneck River is a steel stringer/multi-beam or girder 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

No traffic count is recorded. The structure is 144 ft (43.9 m) long and 51 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesRTE 907W
CrossesMamaroneck River
Location0.7 MI S Jcts Hrp & RT127
CountyWestchester County
StateNew York
Coordinates40.99151, -73.73426
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating86 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length144 ft (43.9 m)
Longest span139 ft (42.3 m)
Deck width51 ft (15.5 m)
Roadway width48 ft (14.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic—
Projected traffic—
Trucks2%
Lanes on structure3
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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$8.1 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 good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 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 144 ft (43.9 m) long with a longest span of 139 ft (42.3 m) and a deck 51 ft wide.

Who owns RTE 907W over Mamaroneck River?

It is owned by the State Highway Agency.