Lyman Road over Mill Brook
Good Condition52 years old708 vehicles/day
Location
| State | New Hampshire |
| County | Grafton |
| Location | .59 Mi N.w. Jct. 302 |
| Carries | Lyman Road |
| Crosses | Mill Brook |
| Coordinates | 44.24399, -71.88623 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Frame |
| Total Length | 29.9 ft (9.1 m) |
| Max Span | 26.9 ft (8.2 m) |
| Deck Width | 32.5 ft (9.9 m) |
| Deck Area | 90.1 sq m |
| Main Spans | 1 |
| Year Built | 1974 |
Traffic
| Avg Daily Traffic | 708 (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 | 015000900012100 |