Nh175 over Mill Brook
Fair Condition91 years old1,610 vehicles/day
Location
| State | New Hampshire |
| County | Grafton |
| Location | 2.85 Mi. N. Of Campton Tl |
| Carries | Nh175 |
| Crosses | Mill Brook |
| Coordinates | 43.90191, -71.66705 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 5 (Fair) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Tee Beam |
| Total Length | 41.0 ft (12.5 m) |
| Max Span | 38.1 ft (11.6 m) |
| Deck Width | 28.2 ft (8.6 m) |
| Deck Area | 107.5 sq m |
| Main Spans | 1 |
| Year Built | 1935 (reconstructed 1979) |
Traffic
| Avg Daily Traffic | 1,610 (2023) |
| Truck Traffic | 10% |
| 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 | 025402030008800 |