Ridge Road over Salmon Brook
Good Condition28 years old4,876 vehicles/day
Location
| State | New Hampshire |
| County | Hillsborough |
| Location | .5 Mi W Of E Dunstable RD |
| Carries | Ridge Road |
| Crosses | Salmon Brook |
| Coordinates | 42.70671, -71.48926 |
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 | 25.6 ft (7.8 m) |
| Max Span | 24.0 ft (7.3 m) |
| Deck Area | 71.0 sq m |
| Main Spans | 1 |
| Year Built | 1998 |
Traffic
| Avg Daily Traffic | 4,876 (2023) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 823 |
| Inspection Frequency | Every 24 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 017701040003500 |