HWY Tremont ST over Comb I 90 & AMTRAK
PoorSuffolk County, Massachusetts · .32 KM S. of Bost Com S68 · Structure no. B160434TFDOTNBI
- Built
- 1965
- 60 years old
- Condition
- Poor
- inspected November 2021
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 171 ft
- 3 main spans
- Daily traffic
- 11,000
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
HWY Tremont ST over Comb I 90 & AMTRAK is a steel stringer/multi-beam or girder carrying HWY Tremont ST over Comb I 90 & AMTRAK in Suffolk County, Massachusetts. It was built in 1965, so it is 60 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 11,000 vehicles a day, roughly 7% of them trucks, projected to reach 23,690 by 2032. The structure is 171 ft (52.1 m) long and 82 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, 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 HWY Tremont ST over Comb I 90 & AMTRAK built?
It was built in 1965, making it 60 years old in 2025.
What condition is HWY Tremont ST over Comb I 90 & AMTRAK 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 November 2021.
How much traffic does HWY Tremont ST over Comb I 90 & AMTRAK carry?
About 11,000 vehicles per day (2019 count), of which roughly 7% are trucks.
How long is HWY Tremont ST over Comb I 90 & AMTRAK?
The structure is 171 ft (52.1 m) long with a longest span of 58 ft (17.7 m) and a deck 82 ft wide.
Who owns HWY Tremont ST over Comb I 90 & AMTRAK?
It is owned by the State Highway Agency.