I 90 WB over ST 12 Southbridge ST
PoorWorcester County, Massachusetts · At I-90 Mm 90.6 · Structure no. A170484KKDOTNBI
- Built
- 1957
- 68 years old, rebuilt 1980
- Condition
- Poor
- inspected February 2025
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 313 ft
- 3 main spans
- Daily traffic
- 41,794
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 90 WB over ST 12 Southbridge ST is a steel continuous stringer/multi-beam or girder carrying I 90 WB over ST 12 Southbridge ST in Worcester County, Massachusetts. It was built in 1957 and reconstructed in 1980, 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 41,794 vehicles a day, roughly 15% of them trucks, projected to reach 66,664 by 2032. The structure is 313 ft (95.4 m) long and 58 ft wide. If it were closed, the detour would be 6.2 mi (10 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 I 90 WB over ST 12 Southbridge ST built?
It was built in 1957, making it 68 years old in 2025. It was reconstructed in 1980.
What condition is I 90 WB over ST 12 Southbridge ST in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2025.
How much traffic does I 90 WB over ST 12 Southbridge ST carry?
About 41,794 vehicles per day (2023 count), of which roughly 15% are trucks.
How long is I 90 WB over ST 12 Southbridge ST?
The structure is 313 ft (95.4 m) long with a longest span of 129 ft (39.3 m) and a deck 58 ft wide.
Who owns I 90 WB over ST 12 Southbridge ST?
It is owned by the State Highway Agency.