Mamaroneck Avenue over Mamaroneck River
FairWestchester County, New York · 1.4 MI NW Mamaroneck Rye · Structure no. 000000003347919
- Built
- 1963
- 62 years old, rebuilt 2022
- Condition
- Fair
- inspected March 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 53 ft
- 1 main span
- Daily traffic
- 24,846
- 2008 count
- Owner
- County
- County Highway Agency
About this bridge
Mamaroneck Avenue over Mamaroneck River is a prestressed concrete box beam or girders - multiple carrying Mamaroneck Avenue over Mamaroneck River in Westchester County, New York. It was built in 1963 and reconstructed in 2022, so it is 62 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 24,846 vehicles a day, roughly 5% of them trucks, projected to reach 24,962 by 2041. The structure is 53 ft (16.2 m) long and 84 ft wide. If it were closed, the detour would be 2.5 mi (4 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 9 Excellent | No problems noted. |
| Superstructure | 9 Excellent | No problems noted. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mamaroneck Avenue over Mamaroneck River built?
It was built in 1963, making it 62 years old in 2025. It was reconstructed in 2022.
What condition is Mamaroneck Avenue 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 Mamaroneck Avenue over Mamaroneck River carry?
About 24,846 vehicles per day (2008 count), of which roughly 5% are trucks.
How long is Mamaroneck Avenue over Mamaroneck River?
The structure is 53 ft (16.2 m) long with a longest span of 50 ft (15.2 m) and a deck 84 ft wide.
Who owns Mamaroneck Avenue over Mamaroneck River?
It is owned by the County Highway Agency.