US 3 over Lost River
Poor Condition95 years old2,784 vehicles/day
Location
| State | New Hampshire |
| County | Grafton |
| Location | 5.6 Mi From Thornton Tl |
| Carries | US 3 |
| Crosses | Lost River |
| Coordinates | 44.02575, -71.68507 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 4 (Poor) |
| Superstructure | 4 (Poor) |
| Substructure | 4 (Poor) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Arch - Deck |
| Total Length | 68.9 ft (21 m) |
| Max Span | 68.9 ft (21 m) |
| Deck Width | 32.2 ft (9.8 m) |
| Deck Area | 205.8 sq m |
| Main Spans | 1 |
| Year Built | 1931 |
Traffic
| Avg Daily Traffic | 2,784 (2023) |
| Truck Traffic | 4% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | November 2024 |
| Inspection Frequency | Every 8 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is possibly eligible (requires evaluation) |
| Structure Number | 028401710015300 |