I-93 US 4 NB over Sewalls Falls Road
Good Condition67 years old23,491 vehicles/day
Location
| State | New Hampshire |
| County | Merrimack |
| Location | 1.4 Mi. S. Jct. RT 3 Byp. |
| Carries | I-93 US 4 NB |
| Crosses | Sewalls Falls Road |
| Coordinates | 43.27381, -71.56105 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Concrete |
| Design | Frame |
| Total Length | 41.0 ft (12.5 m) |
| Max Span | 35.1 ft (10.7 m) |
| Deck Width | 45.9 ft (14 m) |
| Deck Area | 175 sq m |
| Main Spans | 1 |
| Year Built | 1959 |
Traffic
| Avg Daily Traffic | 23,491 (2023) |
| Truck Traffic | 6% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 2 |
Inspection & Ownership
| Last Inspection | 523 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 005200680012200 |