Lyman Road over Mill Brook
Good Condition98 years old1,167 vehicles/day
Location
| State | New Hampshire |
| County | Grafton |
| Location | 1.09 Mi NW Jct 302 |
| Carries | Lyman Road |
| Crosses | Mill Brook |
| Coordinates | 44.24719, -71.88960 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Arch - Deck |
| Total Length | 20.0 ft (6.1 m) |
| Max Span | 20.0 ft (6.1 m) |
| Deck Width | 27.6 ft (8.4 m) |
| Deck Area | 51.2 sq m |
| Main Spans | 1 |
| Year Built | 1928 (reconstructed 1982) |
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 | 015000830013200 |