US 3 over Souhegan River
FairHillsborough County, New Hampshire · 0.03 MI from Railroad Ave · Structure no. 016801160012000
- Built
- 1921
- 104 years old, rebuilt 1934
- Condition
- Fair
- inspected November 2024
- Type
- Arch - Deck
- Masonry
- Length
- 113 ft
- 2 main spans
- Daily traffic
- 13,075
- 2023 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
US 3 over Souhegan River is a masonry arch - deck carrying US 3 over Souhegan River in Hillsborough County, New Hampshire. It was built in 1921 and reconstructed in 1934, so it is 104 years old, older than the New Hampshire average of 56.9 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 13,075 vehicles a day, roughly 7% of them trucks, projected to reach 19,351 by 2043. The structure is 113 ft (34.4 m) long and 42 ft wide. If it were closed, the detour would be 11.2 mi (18 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 3 over Souhegan River built?
It was built in 1921, making it 104 years old in 2025. It was reconstructed in 1934.
What condition is US 3 over Souhegan 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 2024.
How much traffic does US 3 over Souhegan River carry?
About 13,075 vehicles per day (2023 count), of which roughly 7% are trucks.
How long is US 3 over Souhegan River?
The structure is 113 ft (34.4 m) long with a longest span of 60 ft (18.3 m) and a deck 42 ft wide.
Who owns US 3 over Souhegan River?
It is owned by the City or Municipal Highway Agency.