I 495 NB & On-Ramp over RR Mbta/Bmrr
PoorEssex County, Massachusetts · 2.6 MI N of I-93 · Structure no. A090372Y1DOTNBI
- Built
- 1962
- 63 years old
- Condition
- Poor
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 139 ft
- 3 main spans
- Daily traffic
- 62,500
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
I 495 NB & On-Ramp over RR Mbta/Bmrr is a steel stringer/multi-beam or girder carrying I 495 NB & On-Ramp over RR Mbta/Bmrr in Essex County, Massachusetts. It was built in 1962, 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. Its operating status is: open, would be posted or closed except for temporary shoring.
It carries about 62,500 vehicles a day, roughly 9% of them trucks, projected to reach 157,930 by 2031. The structure is 139 ft (42.4 m) long and 57 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 4 Poor | Advanced section loss, deterioration, 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 NB & On-Ramp over RR Mbta/Bmrr built?
It was built in 1962, making it 63 years old in 2025.
What condition is I 495 NB & On-Ramp over RR Mbta/Bmrr 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 July 2024.
How much traffic does I 495 NB & On-Ramp over RR Mbta/Bmrr carry?
About 62,500 vehicles per day (2024 count), of which roughly 9% are trucks.
How long is I 495 NB & On-Ramp over RR Mbta/Bmrr?
The structure is 139 ft (42.4 m) long with a longest span of 48 ft (14.6 m) and a deck 57 ft wide.
Who owns I 495 NB & On-Ramp over RR Mbta/Bmrr?
It is owned by the State Highway Agency.