HWY School ST over Water Merrimack River
FairMiddlesex County, Massachusetts · S. of Vfw Highway · Structure no. L150222BNMUNNBI
- Built
- 1917
- 108 years old, rebuilt 2005
- Condition
- Fair
- inspected November 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 336 ft
- 3 main spans
- Daily traffic
- 20,800
- 2019 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
HWY School ST over Water Merrimack River is a steel stringer/multi-beam or girder carrying HWY School ST over Water Merrimack River in Middlesex County, Massachusetts. It was built in 1917 and reconstructed in 2005, so it is 108 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.
It carries about 20,800 vehicles a day, roughly 10% of them trucks, projected to reach 29,217 by 2032. The structure is 336 ft (102.4 m) long and 56 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was HWY School ST over Water Merrimack River built?
It was built in 1917, making it 108 years old in 2025. It was reconstructed in 2005.
What condition is HWY School ST over Water Merrimack 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 November 2023.
How much traffic does HWY School ST over Water Merrimack River carry?
About 20,800 vehicles per day (2019 count), of which roughly 10% are trucks.
How long is HWY School ST over Water Merrimack River?
The structure is 336 ft (102.4 m) long with a longest span of 125 ft (38.2 m) and a deck 56 ft wide.
Who owns HWY School ST over Water Merrimack River?
It is owned by the City or Municipal Highway Agency.