HWY Cambridge ST over Comb I 90 & Mbta/Csx
PoorSuffolk County, Massachusetts · .2 MI W.Railroad Yds S101 · Structure no. B160564REDOTNBI
- Built
- 1964
- 61 years old
- Condition
- Poor
- inspected February 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 474 ft
- 5 main spans
- Daily traffic
- 31,600
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
HWY Cambridge ST over Comb I 90 & Mbta/Csx is a steel stringer/multi-beam or girder carrying HWY Cambridge ST over Comb I 90 & Mbta/Csx in Suffolk County, Massachusetts. It was built in 1964, so it is 61 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 31,600 vehicles a day, roughly 5% of them trucks, projected to reach 31,428 by 2032. The structure is 474 ft (144.5 m) long and 91 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was HWY Cambridge ST over Comb I 90 & Mbta/Csx built?
It was built in 1964, making it 61 years old in 2025.
What condition is HWY Cambridge ST over Comb I 90 & Mbta/Csx 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 February 2023.
How much traffic does HWY Cambridge ST over Comb I 90 & Mbta/Csx carry?
About 31,600 vehicles per day (2021 count), of which roughly 5% are trucks.
How long is HWY Cambridge ST over Comb I 90 & Mbta/Csx?
The structure is 474 ft (144.5 m) long with a longest span of 130 ft (39.7 m) and a deck 91 ft wide.
Who owns HWY Cambridge ST over Comb I 90 & Mbta/Csx?
It is owned by the State Highway Agency.