I 93 SB/US1SB over ST 37 Granite ST
FairNorfolk County, Massachusetts · I 93 at ST 37 · Structure no. B21048ARDDOTNBI
- Built
- 1957
- 68 years old
- Condition
- Fair
- inspected June 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 106 ft
- 2 main spans
- Daily traffic
- 108,018
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 93 SB/US1SB over ST 37 Granite ST is a prestressed concrete stringer/multi-beam or girder carrying I 93 SB/US1SB over ST 37 Granite ST in Norfolk County, Massachusetts. It was built in 1957, 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 108,018 vehicles a day, roughly 6% of them trucks, projected to reach 323,756 by 2031. The structure is 106 ft (32.2 m) long and 72 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 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I 93 SB/US1SB over ST 37 Granite ST built?
It was built in 1957, making it 68 years old in 2025.
What condition is I 93 SB/US1SB over ST 37 Granite ST 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 June 2024.
How much traffic does I 93 SB/US1SB over ST 37 Granite ST carry?
About 108,018 vehicles per day (2023 count), of which roughly 6% are trucks.
How long is I 93 SB/US1SB over ST 37 Granite ST?
The structure is 106 ft (32.2 m) long with a longest span of 52 ft (15.8 m) and a deck 72 ft wide.
Who owns I 93 SB/US1SB over ST 37 Granite ST?
It is owned by the State Highway Agency.