ST 3 A/Boston RD over Water Shawsheen River
FairPosted for loadMiddlesex County, Massachusetts · 0.25 MI E RT3A/ALLEN RD · Structure no. B120092DFDOTNBI
- Built
- 1915
- 110 years old, rebuilt 1930
- Condition
- Fair
- inspected October 2024
- Type
- Tee Beam
- Concrete
- Length
- 28 ft
- 1 main span
- Daily traffic
- 19,400
- 2016 count
- Owner
- State
- State Highway Agency
About this bridge
ST 3 A/Boston RD over Water Shawsheen River is a concrete tee beam carrying ST 3 A/Boston RD over Water Shawsheen River in Middlesex County, Massachusetts. It was built in 1915 and reconstructed in 1930, so it is 110 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. Its operating status is: posted for load restriction.
It carries about 19,400 vehicles a day, roughly 5% of them trucks, projected to reach 34,745 by 2031. The structure is 28 ft (8.5 m) long and 66 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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. |
| Channel and channel protection | 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 ST 3 A/Boston RD over Water Shawsheen River built?
It was built in 1915, making it 110 years old in 2025. It was reconstructed in 1930.
What condition is ST 3 A/Boston RD over Water Shawsheen River 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 October 2024.
How much traffic does ST 3 A/Boston RD over Water Shawsheen River carry?
About 19,400 vehicles per day (2016 count), of which roughly 5% are trucks.
How long is ST 3 A/Boston RD over Water Shawsheen River?
The structure is 28 ft (8.5 m) long with a longest span of 25 ft (7.6 m) and a deck 66 ft wide.
Who owns ST 3 A/Boston RD over Water Shawsheen River?
It is owned by the State Highway Agency.