I 495 SB over ST 38 Main ST
PoorMiddlesex County, Massachusetts · Rt 495 at Rt 38 · Structure no. T030152JTDOTNBI
- Built
- 1961
- 64 years old
- Condition
- Poor
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 138 ft
- 3 main spans
- Daily traffic
- 68,981
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
I 495 SB over ST 38 Main ST is a steel stringer/multi-beam or girder carrying I 495 SB over ST 38 Main ST in Middlesex County, Massachusetts. It was built in 1961, so it is 64 years old, older 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 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: open, would be posted or closed except for temporary shoring.
It carries about 68,981 vehicles a day, roughly 9% of them trucks, projected to reach 184,778 by 2031. The structure is 138 ft (42.1 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I 495 SB over ST 38 Main ST built?
It was built in 1961, making it 64 years old in 2025.
What condition is I 495 SB over ST 38 Main ST 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 SB over ST 38 Main ST carry?
About 68,981 vehicles per day (2024 count), of which roughly 9% are trucks.
How long is I 495 SB over ST 38 Main ST?
The structure is 138 ft (42.1 m) long with a longest span of 69 ft (21 m) and a deck 57 ft wide.
Who owns I 495 SB over ST 38 Main ST?
It is owned by the State Highway Agency.