US Bridges

Mamaroneck Road over 907W907W87023012 RTE 90

Fair

Westchester County, New York · 3.8 MI NE JCT Rts Hrp<ccp · Structure no. 000000005500200

Built
1927
98 years old
Condition
Fair
inspected March 2023
Type
Frame
Concrete
Length
76 ft
1 main span
Daily traffic
10,096
2020 count
Owner
State
State Highway Agency

About this bridge

Mamaroneck Road over 907W907W87023012 RTE 90 is a concrete frame carrying Mamaroneck Road over 907W907W87023012 RTE 90 in Westchester County, New York. It was built in 1927, so it is 98 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 10,096 vehicles a day, roughly 2% of them trucks, projected to reach 12,264 by 2041. The structure is 76 ft (23.2 m) long and 51 ft wide.

Location

Open in Google Maps
CarriesMamaroneck Road
Crosses907W907W87023012 RTE 90
Location3.8 MI NE JCT Rts Hrp<ccp
CountyWestchester County
StateNew York
Coordinates40.97691, -73.75858
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.5 US tons
Inventory rating25.6 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckNot applicable
Main spans1
Design loadH 20
Structure length76 ft (23.2 m)
Longest span68 ft (20.7 m)
Deck width51 ft (15.5 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deck107 ft (32.7 m)

Traffic and service

Average daily traffic10,096 (2020)
Projected traffic12,264 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$4.6 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Mamaroneck Road over 907W907W87023012 RTE 90 built?

It was built in 1927, making it 98 years old in 2025.

What condition is Mamaroneck Road over 907W907W87023012 RTE 90 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 Mamaroneck Road over 907W907W87023012 RTE 90 carry?

About 10,096 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Mamaroneck Road over 907W907W87023012 RTE 90?

The structure is 76 ft (23.2 m) long with a longest span of 68 ft (20.7 m) and a deck 51 ft wide.

Who owns Mamaroneck Road over 907W907W87023012 RTE 90?

It is owned by the State Highway Agency.