US 3 NB over HWY Dunstable RD
GoodMiddlesex County, Massachusetts · 1.5 Mi. N of RTE 40 · Structure no. T090118HHDOTNBI
- Built
- 2004
- 21 years old
- Condition
- Good
- inspected April 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 148 ft
- 1 main span
- Daily traffic
- 82,679
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
US 3 NB over HWY Dunstable RD is a steel stringer/multi-beam or girder carrying US 3 NB over HWY Dunstable RD in Middlesex County, Massachusetts. It was built in 2004, so it is 21 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 82,679 vehicles a day, roughly 10% of them trucks, projected to reach 123,027 by 2032. The structure is 148 ft (45 m) long and 75 ft wide. If it were closed, the detour would be 5 mi (8 km).
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 US 3 NB over HWY Dunstable RD built?
It was built in 2004, making it 21 years old in 2025.
What condition is US 3 NB over HWY Dunstable RD 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 April 2023.
How much traffic does US 3 NB over HWY Dunstable RD carry?
About 82,679 vehicles per day (2019 count), of which roughly 10% are trucks.
How long is US 3 NB over HWY Dunstable RD?
The structure is 148 ft (45 m) long with a longest span of 143 ft (43.7 m) and a deck 75 ft wide.
Who owns US 3 NB over HWY Dunstable RD?
It is owned by the State Highway Agency.