I-293 NB Off Ramp over Merrimack River
Good Condition43 years old9,517 vehicles/day
Location
| State | New Hampshire |
| County | Hillsborough |
| Location | At Granite ST Bridge |
| Carries | I-293 NB Off Ramp |
| Crosses | Merrimack River |
| Coordinates | 42.98477, -71.47030 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Tee Beam |
| Total Length | 81.0 ft (24.7 m) |
| Max Span | 76.1 ft (23.2 m) |
| Deck Width | 40.0 ft (12.2 m) |
| Deck Area | 301.3 sq m |
| Main Spans | 1 |
| Year Built | 1983 |
Traffic
| Avg Daily Traffic | 9,517 (2023) |
| Truck Traffic | 4% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 423 |
| Inspection Frequency | Every 24 months |
| Owner | State Toll Authority |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 016101320006800 |