Lyman Road over Mill Brook
Good Condition100 years old573 vehicles/day
Location
| State | New Hampshire |
| County | Grafton |
| Location | 1.69 Mi NW Jct 302 |
| Carries | Lyman Road |
| Crosses | Mill Brook |
| Coordinates | 44.25616, -71.89371 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Frame |
| Total Length | 33.1 ft (10.1 m) |
| Max Span | 15.1 ft (4.6 m) |
| Deck Width | 27.6 ft (8.4 m) |
| Deck Area | 84.8 sq m |
| Main Spans | 2 |
| Year Built | 1926 (reconstructed 1983) |
Traffic
| Avg Daily Traffic | 573 (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 | 015000810013600 |