HWY Cambridge ST over Comb Orange & Mbta/Bmrr
FairSuffolk County, Massachusetts · 0.33 KM W Sullivan Sq. · Structure no. B1606638DMUNNBI
- Built
- 1880
- 145 years old, rebuilt 1972
- Condition
- Fair
- inspected January 2025
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 173 ft
- 2 main spans
- Daily traffic
- 23,000
- 2019 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
HWY Cambridge ST over Comb Orange & Mbta/Bmrr is a steel continuous stringer/multi-beam or girder carrying HWY Cambridge ST over Comb Orange & Mbta/Bmrr in Suffolk County, Massachusetts. It was built in 1880 and reconstructed in 1972, so it is 145 years old, older 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 23,000 vehicles a day, roughly 13% of them trucks, projected to reach 56,539 by 2032. The structure is 173 ft (52.7 m) long and 74 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 Orange & Mbta/Bmrr built?
It was built in 1880, making it 145 years old in 2025. It was reconstructed in 1972.
What condition is HWY Cambridge ST over Comb Orange & Mbta/Bmrr 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 HWY Cambridge ST over Comb Orange & Mbta/Bmrr carry?
About 23,000 vehicles per day (2019 count), of which roughly 13% are trucks.
How long is HWY Cambridge ST over Comb Orange & Mbta/Bmrr?
The structure is 173 ft (52.7 m) long with a longest span of 87 ft (26.5 m) and a deck 74 ft wide.
Who owns HWY Cambridge ST over Comb Orange & Mbta/Bmrr?
It is owned by the City or Municipal Highway Agency.