Old Route 3A over Smith River
GoodGrafton County, New Hampshire · 3.54 KM S of Bristol · Structure no. CEPNEDNH3310008
- Built
- 1926
- 99 years old, rebuilt 1998
- Condition
- Good
- inspected June 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 46 ft
- 1 main span
- Daily traffic
- 50
- 2023 count
- Owner
- Federal
- Corps of Engineers (Civil)
About this bridge
Old Route 3A over Smith River is a prestressed concrete box beam or girders - multiple carrying Old Route 3A over Smith River in Grafton County, New Hampshire. It was built in 1926 and reconstructed in 1998, so it is 99 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 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 50 vehicles a day, roughly 1% of them trucks, projected to reach 50 by 2040. The structure is 46 ft (13.9 m) long and 28 ft wide. If it were closed, the detour would be 9.9 mi (16 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. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Old Route 3A over Smith River built?
It was built in 1926, making it 99 years old in 2025. It was reconstructed in 1998.
What condition is Old Route 3A over Smith River 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 June 2023.
How much traffic does Old Route 3A over Smith River carry?
About 50 vehicles per day (2023 count), of which roughly 1% are trucks.
How long is Old Route 3A over Smith River?
The structure is 46 ft (13.9 m) long with a longest span of 44 ft (13.4 m) and a deck 28 ft wide.
Who owns Old Route 3A over Smith River?
It is owned by the Corps of Engineers (Civil).