US 3 Nh 28 over Heads Pond
Fair Condition45 years old16,478 vehicles/day
Location
| State | New Hampshire |
| County | Merrimack |
| Location | 0.7 Mi S Of Allenstown Tl |
| Carries | US 3 Nh 28 |
| Crosses | Heads Pond |
| Coordinates | 43.10751, -71.44813 |
Condition Ratings
| Overall Condition | Fair |
| Channel/Waterway | 7 (Good) |
| Culvert | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Culvert |
| Total Length | 23.0 ft (7 m) |
| Max Span | 20.0 ft (6.1 m) |
| Deck Area | 93.8 sq m |
| Main Spans | 1 |
| Year Built | 1981 |
Traffic
| Avg Daily Traffic | 16,478 (2023) |
| Truck Traffic | 7% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 624 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is possibly eligible (requires evaluation) |
| Structure Number | 012801000016600 |