North River Road over Purgatory Brook
Good Condition48 years old2,702 vehicles/day
Location
| State | New Hampshire |
| County | Hillsborough |
| Location | .64 Mi Lyndeboro Tl. |
| Carries | North River Road |
| Crosses | Purgatory Brook |
| Coordinates | 42.85280, -71.69400 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 40.0 ft (12.2 m) |
| Max Span | 36.1 ft (11 m) |
| Deck Width | 32.2 ft (9.8 m) |
| Deck Area | 119.6 sq m |
| Main Spans | 1 |
| Year Built | 1978 |
Traffic
| Avg Daily Traffic | 2,702 (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 | 017200760015200 |