US 3 over Merrimack River
Fair Condition28 years old26,707 vehicles/day
Location
| State | New Hampshire |
| County | Merrimack |
| Location | 0.1 Mi East Jct I-93 |
| Carries | US 3 |
| Crosses | Merrimack River |
| Coordinates | 43.19317, -71.52356 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 696.9 ft (212.4 m) |
| Max Span | 149.9 ft (45.7 m) |
| Deck Width | 95.1 ft (29 m) |
| Deck Area | 6159.6 sq m |
| Main Spans | 5 |
| Year Built | 1998 |
Traffic
| Avg Daily Traffic | 26,707 (2023) |
| Truck Traffic | 5% |
| Lanes On Bridge | 4 |
Inspection & Ownership
| Last Inspection | 723 |
| Inspection Frequency | Every 24 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 005201850010400 |