Millbrook Road over Mill Brook
Good Condition98 years old1,167 vehicles/day
Location
| State | New Hampshire |
| County | Grafton |
| Location | 1.28 Mi S Jct 302 |
| Carries | Millbrook Road |
| Crosses | Mill Brook |
| Coordinates | 44.18569, -71.91881 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 5 (Fair) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Arch - Deck |
| Total Length | 29.9 ft (9.1 m) |
| Max Span | 29.9 ft (9.1 m) |
| Deck Width | 25.6 ft (7.8 m) |
| Deck Area | 71.0 sq m |
| Main Spans | 1 |
| Year Built | 1928 |
Traffic
| Avg Daily Traffic | 1,167 (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 | 014200790015600 |