I 93 NB Bt 33-38 over I 93 SB Bt 33-38
FairSuffolk County, Massachusetts · .6 MI N of JCT I93&US1 · Structure no. B162813DUDOTNBI
- Built
- 1970
- 55 years old
- Condition
- Fair
- inspected April 2024
- Type
- Girder and Floorbeam System
- Steel
- Length
- 406 ft
- 5 main spans
- Daily traffic
- 75,910
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 93 NB Bt 33-38 over I 93 SB Bt 33-38 is a steel girder and floorbeam system carrying I 93 NB Bt 33-38 over I 93 SB Bt 33-38 in Suffolk County, Massachusetts. It was built in 1970, so it is 55 years old, younger 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 75,910 vehicles a day, roughly 8% of them trucks, projected to reach 152,245 by 2031. The structure is 406 ft (123.7 m) long and 69 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 | 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I 93 NB Bt 33-38 over I 93 SB Bt 33-38 built?
It was built in 1970, making it 55 years old in 2025.
What condition is I 93 NB Bt 33-38 over I 93 SB Bt 33-38 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 April 2024.
How much traffic does I 93 NB Bt 33-38 over I 93 SB Bt 33-38 carry?
About 75,910 vehicles per day (2023 count), of which roughly 8% are trucks.
How long is I 93 NB Bt 33-38 over I 93 SB Bt 33-38?
The structure is 406 ft (123.7 m) long with a longest span of 82 ft (25 m) and a deck 69 ft wide.
Who owns I 93 NB Bt 33-38 over I 93 SB Bt 33-38?
It is owned by the State Highway Agency.