HWY S Bos Bypass over Comb Amtrak/Mbta&red LN
GoodSuffolk County, Massachusetts · .6 MI S of JCT I 90 I 93 · Structure no. B166457GDDOTNBI
- Built
- 1995
- 30 years old
- Condition
- Good
- inspected September 2023
- Type
- Box Beam or Girders - Multiple
- Steel Continuous
- Length
- 1,823 ft
- 10 main spans
- Daily traffic
- 10,776
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
HWY S Bos Bypass over Comb Amtrak/Mbta&red LN is a steel continuous box beam or girders - multiple carrying HWY S Bos Bypass over Comb Amtrak/Mbta&red LN in Suffolk County, Massachusetts. It was built in 1995, so it is 30 years old, younger than the Massachusetts average of 63.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 10,776 vehicles a day, roughly 50% of them trucks, projected to reach 18,399 by 2032. The structure is 1,823 ft (555.5 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was HWY S Bos Bypass over Comb Amtrak/Mbta&red LN built?
It was built in 1995, making it 30 years old in 2025.
What condition is HWY S Bos Bypass over Comb Amtrak/Mbta&red LN in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.
How much traffic does HWY S Bos Bypass over Comb Amtrak/Mbta&red LN carry?
About 10,776 vehicles per day (2019 count), of which roughly 50% are trucks.
How long is HWY S Bos Bypass over Comb Amtrak/Mbta&red LN?
The structure is 1,823 ft (555.5 m) long with a longest span of 200 ft (61 m) and a deck 35 ft wide.
Who owns HWY S Bos Bypass over Comb Amtrak/Mbta&red LN?
It is owned by the State Highway Agency.