NH117 over Salmon Hole Brook
GoodGrafton County, New Hampshire · 1.0 MI E. Jct. Rt. 302 · Structure no. 015001160010800
- Built
- 1969
- 56 years old
- Condition
- Good
- inspected April 2024
- Type
- Culvert
- Concrete
- Length
- 35 ft
- 1 main span
- Daily traffic
- 882
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
NH117 over Salmon Hole Brook is a concrete culvert carrying NH117 over Salmon Hole Brook in Grafton County, New Hampshire. It was built in 1969, so it is 56 years old, younger 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 882 vehicles a day, roughly 4% of them trucks, projected to reach 1,305 by 2043. The structure is 35 ft (10.7 m) long. If it were closed, the detour would be 6.2 mi (10 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was NH117 over Salmon Hole Brook built?
It was built in 1969, making it 56 years old in 2025.
What condition is NH117 over Salmon Hole Brook 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 2024.
How much traffic does NH117 over Salmon Hole Brook carry?
About 882 vehicles per day (2023 count), of which roughly 4% are trucks.
How long is NH117 over Salmon Hole Brook?
The structure is 35 ft (10.7 m) long with a longest span of 35 ft (10.7 m).
Who owns NH117 over Salmon Hole Brook?
It is owned by the State Highway Agency.