River Avenue over Long Island-Mk Br
PoorClosed to trafficSuffolk County, New York · .5 Mile East of Eastport · Structure no. 000000002261140
- Built
- 1907
- 118 years old, rebuilt 1990
- Condition
- Poor
- inspected August 2024
- Type
- Girder and Floorbeam System
- Steel
- Length
- 99 ft
- 3 main spans
- Daily traffic
- 337
- 2017 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
River Avenue over Long Island-Mk Br is a steel girder and floorbeam system carrying River Avenue over Long Island-Mk Br in Suffolk County, New York. It was built in 1907 and reconstructed in 1990, so it is 118 years old, older than the New York average of 53 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: closed to all traffic.
It carries about 337 vehicles a day, roughly 1% of them trucks, projected to reach 472 by 2037. The structure is 99 ft (30.2 m) long and 25 ft wide. If it were closed, the detour would be 0.6 mi (1 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 8 Very Good | No problems noted. |
| Superstructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was River Avenue over Long Island-Mk Br built?
It was built in 1907, making it 118 years old in 2025. It was reconstructed in 1990.
What condition is River Avenue over Long Island-Mk Br in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2024.
How much traffic does River Avenue over Long Island-Mk Br carry?
About 337 vehicles per day (2017 count), of which roughly 1% are trucks.
How long is River Avenue over Long Island-Mk Br?
The structure is 99 ft (30.2 m) long with a longest span of 35 ft (10.7 m) and a deck 25 ft wide.
Who owns River Avenue over Long Island-Mk Br?
It is owned by the Town or Township Highway Agency.