I 495 NB over Water Merrimack River
GoodEssex County, Massachusetts · .4 MI S ST110 · Structure no. H12039C32DOTNBI
- Built
- 2021
- 4 years old
- Condition
- Good
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 722 ft
- 3 main spans
- Daily traffic
- 60,941
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 495 NB over Water Merrimack River is a steel continuous stringer/multi-beam or girder carrying I 495 NB over Water Merrimack River in Essex County, Massachusetts. It was built in 2021, so it is 4 years old, younger than the Massachusetts average of 63.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 60,941 vehicles a day, roughly 1% of them trucks. The structure is 722 ft (220 m) long and 79 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I 495 NB over Water Merrimack River built?
It was built in 2021, making it 4 years old in 2025.
What condition is I 495 NB over Water Merrimack 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 July 2024.
How much traffic does I 495 NB over Water Merrimack River carry?
About 60,941 vehicles per day (2023 count), of which roughly 1% are trucks.
How long is I 495 NB over Water Merrimack River?
The structure is 722 ft (220 m) long with a longest span of 278 ft (84.7 m) and a deck 79 ft wide.
Who owns I 495 NB over Water Merrimack River?
It is owned by the State Highway Agency.