HWY Boston ST over TR AMTRAK & Red Line
PoorSuffolk County, Massachusetts · .04 M.Of I93 · Structure no. B161284VLMBTNBI
- Built
- 1977
- 48 years old
- Condition
- Poor
- inspected January 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 78 ft
- 1 main span
- Daily traffic
- 15,300
- 2012 count
- Owner
- State
- Other State Agency
About this bridge
HWY Boston ST over TR AMTRAK & Red Line is a prestressed concrete box beam or girders - multiple carrying HWY Boston ST over TR AMTRAK & Red Line in Suffolk County, Massachusetts. It was built in 1977, so it is 48 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.
It carries about 15,300 vehicles a day, roughly 6% of them trucks, projected to reach 14,056 by 2031. The structure is 78 ft (23.8 m) long and 62 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was HWY Boston ST over TR AMTRAK & Red Line built?
It was built in 1977, making it 48 years old in 2025.
What condition is HWY Boston ST over TR AMTRAK & Red Line 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 January 2023.
How much traffic does HWY Boston ST over TR AMTRAK & Red Line carry?
About 15,300 vehicles per day (2012 count), of which roughly 6% are trucks.
How long is HWY Boston ST over TR AMTRAK & Red Line?
The structure is 78 ft (23.8 m) long with a longest span of 73 ft (22.1 m) and a deck 62 ft wide.
Who owns HWY Boston ST over TR AMTRAK & Red Line?
It is owned by the Other State Agency and maintained by the State Highway Agency.