I 495 SB Ramp L over Comb Merrimack ST & Mbt
PoorEssex County, Massachusetts · .16 KM W I495 · Structure no. L040442XCDOTNBI
- Built
- 1963
- 62 years old
- Condition
- Poor
- inspected June 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 395 ft
- 6 main spans
- Daily traffic
- 10,371
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 495 SB Ramp L over Comb Merrimack ST & Mbt is a steel stringer/multi-beam or girder carrying I 495 SB Ramp L over Comb Merrimack ST & Mbt in Essex County, Massachusetts. It was built in 1963, so it is 62 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 2 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: open, would be posted or closed except for temporary shoring.
It carries about 10,371 vehicles a day, roughly 6% of them trucks, projected to reach 20,057 by 2032. The structure is 395 ft (120.4 m) long and 34 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 2 Critical | Advanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken. |
| 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 I 495 SB Ramp L over Comb Merrimack ST & Mbt built?
It was built in 1963, making it 62 years old in 2025.
What condition is I 495 SB Ramp L over Comb Merrimack ST & Mbt 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 June 2024.
How much traffic does I 495 SB Ramp L over Comb Merrimack ST & Mbt carry?
About 10,371 vehicles per day (2023 count), of which roughly 6% are trucks.
How long is I 495 SB Ramp L over Comb Merrimack ST & Mbt?
The structure is 395 ft (120.4 m) long with a longest span of 80 ft (24.4 m) and a deck 34 ft wide.
Who owns I 495 SB Ramp L over Comb Merrimack ST & Mbt?
It is owned by the State Highway Agency.