I-93 SB over Merrimack River Csx RD
Fair Condition50 years old34,000 vehicles/day
Location
| State | New Hampshire |
| County | Hillsborough |
| Location | Manchester-hooksett Tl |
| Carries | I-93 SB |
| Crosses | Merrimack River Csx RD |
| Coordinates | 43.04074, -71.46103 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 5 (Fair) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 826.1 ft (251.8 m) |
| Max Span | 228.0 ft (69.5 m) |
| Deck Width | 68.9 ft (21 m) |
| Deck Area | 5287.8 sq m |
| Main Spans | 4 |
| Year Built | 1976 (reconstructed 2011) |
Traffic
| Avg Daily Traffic | 34,000 (2023) |
| Truck Traffic | 6% |
| Lanes On Bridge | 3 |
| Lanes Under Bridge | 2 |
Inspection & Ownership
| Last Inspection | 423 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 016100600008600 |