I 93 /US1/ST3 over Comb MBTA & Red LN Ssh
FairSuffolk County, Massachusetts · 6.8 KM S of JCT I90&I93 · Structure no. B162653D6DOTNBI
- Built
- 1957
- 68 years old, rebuilt 1984
- Condition
- Fair
- inspected November 2021
- Type
- Girder and Floorbeam System
- Steel Continuous
- Length
- 199 ft
- 2 main spans
- Daily traffic
- 211,123
- 2018 count
- Owner
- State
- State Highway Agency
About this bridge
I 93 /US1/ST3 over Comb MBTA & Red LN Ssh is a steel continuous girder and floorbeam system carrying I 93 /US1/ST3 over Comb MBTA & Red LN Ssh in Suffolk County, Massachusetts. It was built in 1957 and reconstructed in 1984, so it is 68 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 211,123 vehicles a day, roughly 6% of them trucks, projected to reach 331,653 by 2032. The structure is 199 ft (60.7 m) long and 128 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 I 93 /US1/ST3 over Comb MBTA & Red LN Ssh built?
It was built in 1957, making it 68 years old in 2025. It was reconstructed in 1984.
What condition is I 93 /US1/ST3 over Comb MBTA & Red LN Ssh 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 November 2021.
How much traffic does I 93 /US1/ST3 over Comb MBTA & Red LN Ssh carry?
About 211,123 vehicles per day (2018 count), of which roughly 6% are trucks.
How long is I 93 /US1/ST3 over Comb MBTA & Red LN Ssh?
The structure is 199 ft (60.7 m) long with a longest span of 107 ft (32.6 m) and a deck 128 ft wide.
Who owns I 93 /US1/ST3 over Comb MBTA & Red LN Ssh?
It is owned by the State Highway Agency.