Nh117 over Salmon Hole Brook
Good Condition57 years old882 vehicles/day
Location
| State | New Hampshire |
| County | Grafton |
| Location | 1.0 Mi E. Jct. Rt. 302 |
| Carries | Nh117 |
| Crosses | Salmon Hole Brook |
| Coordinates | 44.23365, -71.86056 |
Condition Ratings
| Overall Condition | Good |
| Channel/Waterway | 7 (Good) |
| Culvert | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Culvert |
| Total Length | 35.1 ft (10.7 m) |
| Max Span | 35.1 ft (10.7 m) |
| Deck Area | 104.9 sq m |
| Main Spans | 1 |
| Year Built | 1969 |
Traffic
| Avg Daily Traffic | 882 (2023) |
| Truck Traffic | 4% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 424 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is possibly eligible (requires evaluation) |
| Structure Number | 015001160010800 |