Nh 1b over Piscataqua Estuary
Fair Condition71 years old3,041 vehicles/day
Location
| State | New Hampshire |
| County | Rockingham |
| Location | 1.3 Mi From Jct RT 1 |
| Carries | Nh 1b |
| Crosses | Piscataqua Estuary |
| Coordinates | 43.07098, -70.74301 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 544.0 ft (165.8 m) |
| Max Span | 60.0 ft (18.3 m) |
| Deck Width | 34.4 ft (10.5 m) |
| Deck Area | 1740.9 sq m |
| Main Spans | 10 |
| Year Built | 1955 (reconstructed 2020) |
Traffic
| Avg Daily Traffic | 3,041 (2023) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 823 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is possibly eligible (requires evaluation) |
| Structure Number | 021702410005300 |