I 495 SB over Comb Mdc Aqueduct & CSX
FairWorcester County, Massachusetts · Mm 61.2 /1.5 MI N of ST-9 · Structure no. S200181UADOTNBI
- Built
- 1962
- 63 years old, rebuilt 1990
- Condition
- Fair
- inspected January 2025
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 331 ft
- 4 main spans
- Daily traffic
- 41,411
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
I 495 SB over Comb Mdc Aqueduct & CSX is a steel stringer/multi-beam or girder carrying I 495 SB over Comb Mdc Aqueduct & CSX in Worcester County, Massachusetts. It was built in 1962 and reconstructed in 1990, 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 fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 41,411 vehicles a day, roughly 8% of them trucks, projected to reach 78,965 by 2031. The structure is 331 ft (100.9 m) long and 53 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 5 or 6. Minor deterioration is present but the structure is sound.
| 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I 495 SB over Comb Mdc Aqueduct & CSX built?
It was built in 1962, making it 63 years old in 2025. It was reconstructed in 1990.
What condition is I 495 SB over Comb Mdc Aqueduct & CSX in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in January 2025.
How much traffic does I 495 SB over Comb Mdc Aqueduct & CSX carry?
About 41,411 vehicles per day (2021 count), of which roughly 8% are trucks.
How long is I 495 SB over Comb Mdc Aqueduct & CSX?
The structure is 331 ft (100.9 m) long with a longest span of 83 ft (25.3 m) and a deck 53 ft wide.
Who owns I 495 SB over Comb Mdc Aqueduct & CSX?
It is owned by the State Highway Agency.