ST 1 A/Sb over Other Relief
GoodSuffolk County, Massachusetts · Segment 1 · Structure no. B16589584DOTNBI
- Built
- 1999
- 26 years old
- Condition
- Good
- inspected September 2024
- Type
- Box Beam or Girders - Single or Spread
- Prestressed Concrete Continuous
- Length
- 465 ft
- 3 main spans
- Daily traffic
- 22,241
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
ST 1 A/Sb over Other Relief is a prestressed concrete continuous box beam or girders - single or spread carrying ST 1 A/Sb over Other Relief in Suffolk County, Massachusetts. It was built in 1999, so it is 26 years old, younger than the Massachusetts average of 63.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 22,241 vehicles a day, roughly 2% of them trucks, projected to reach 12,097 by 2031. The structure is 465 ft (141.7 m) long and 26 ft wide.
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was ST 1 A/Sb over Other Relief built?
It was built in 1999, making it 26 years old in 2025.
What condition is ST 1 A/Sb over Other Relief in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2024.
How much traffic does ST 1 A/Sb over Other Relief carry?
About 22,241 vehicles per day (2024 count), of which roughly 2% are trucks.
How long is ST 1 A/Sb over Other Relief?
The structure is 465 ft (141.7 m) long with a longest span of 155 ft (47.2 m) and a deck 26 ft wide.
Who owns ST 1 A/Sb over Other Relief?
It is owned by the State Highway Agency.