HWY School ST over Water Northern Canal
FairMiddlesex County, Massachusetts · Just S of Merrimack Riv · Structure no. L150222BUMUNNBI
- Built
- 1848
- 177 years old, rebuilt 2005
- Condition
- Fair
- inspected October 2024
- Type
- Arch - Deck
- Masonry
- Length
- 158 ft
- 4 main spans
- Daily traffic
- 27,672
- 2024 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
HWY School ST over Water Northern Canal is a masonry arch - deck carrying HWY School ST over Water Northern Canal in Middlesex County, Massachusetts. It was built in 1848 and reconstructed in 2005, so it is 177 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 6 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 27,672 vehicles a day, roughly 5% of them trucks, projected to reach 52,433 by 2031. The structure is 158 ft (48.2 m) long and 60 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 | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was HWY School ST over Water Northern Canal built?
It was built in 1848, making it 177 years old in 2025. It was reconstructed in 2005.
What condition is HWY School ST over Water Northern Canal 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 HWY School ST over Water Northern Canal carry?
About 27,672 vehicles per day (2024 count), of which roughly 5% are trucks.
How long is HWY School ST over Water Northern Canal?
The structure is 158 ft (48.2 m) long with a longest span of 39 ft (11.9 m) and a deck 60 ft wide.
Who owns HWY School ST over Water Northern Canal?
It is owned by the City or Municipal Highway Agency.