Nh 3A over Smith River
FairGrafton County, New Hampshire · Hill Bristol Tl · Structure no. 003201090003200
- Built
- 1940
- 85 years old
- Condition
- Fair
- inspected July 2023
- Type
- Arch - Deck
- Concrete
- Length
- 64 ft
- 1 main span
- Daily traffic
- 2,181
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Nh 3A over Smith River is a concrete arch - deck carrying Nh 3A over Smith River in Grafton County, New Hampshire. It was built in 1940, so it is 85 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 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 2,181 vehicles a day, roughly 4% of them trucks, projected to reach 3,227 by 2043. The structure is 64 ft (19.5 m) long and 42 ft wide. If it were closed, the detour would be 9.9 mi (16 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 | 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 Nh 3A over Smith River built?
It was built in 1940, making it 85 years old in 2025.
What condition is Nh 3A over Smith 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 July 2023.
How much traffic does Nh 3A over Smith River carry?
About 2,181 vehicles per day (2023 count), of which roughly 4% are trucks.
How long is Nh 3A over Smith River?
The structure is 64 ft (19.5 m) long with a longest span of 64 ft (19.5 m) and a deck 42 ft wide.
Who owns Nh 3A over Smith River?
It is owned by the State Highway Agency.