I 495 Upper Level over I 495 Lower Level
PoorEssex County, Massachusetts · At Merrimac River · Structure no. L040352XDDOTNBI
- Built
- 1962
- 63 years old, rebuilt 2006
- Condition
- Poor
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 1,049 ft
- 8 main spans
- Daily traffic
- 73,359
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
I 495 Upper Level over I 495 Lower Level is a steel stringer/multi-beam or girder carrying I 495 Upper Level over I 495 Lower Level in Essex County, Massachusetts. It was built in 1962 and reconstructed in 2006, so it is 63 years old, younger than the Massachusetts average of 63.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 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.
It carries about 73,359 vehicles a day, roughly 5% of them trucks, projected to reach 155,719 by 2032. The structure is 1,049 ft (319.7 m) long and 93 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I 495 Upper Level over I 495 Lower Level built?
It was built in 1962, making it 63 years old in 2025. It was reconstructed in 2006.
What condition is I 495 Upper Level over I 495 Lower Level 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 September 2023.
How much traffic does I 495 Upper Level over I 495 Lower Level carry?
About 73,359 vehicles per day (2024 count), of which roughly 5% are trucks.
How long is I 495 Upper Level over I 495 Lower Level?
The structure is 1,049 ft (319.7 m) long with a longest span of 140 ft (42.7 m) and a deck 93 ft wide.
Who owns I 495 Upper Level over I 495 Lower Level?
It is owned by the State Highway Agency.