I-93 NB over Pemigewasset River
Fair Condition56 years old7,017 vehicles/day
Location
| State | New Hampshire |
| County | Grafton |
| Location | 1.84 Mi Thornton Tl |
| Carries | I-93 NB |
| Crosses | Pemigewasset River |
| Coordinates | 43.96018, -71.67909 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 408.1 ft (124.4 m) |
| Max Span | 154.9 ft (47.2 m) |
| Deck Width | 44.9 ft (13.7 m) |
| Deck Area | 1704.3 sq m |
| Main Spans | 3 |
| Year Built | 1970 |
Traffic
| Avg Daily Traffic | 7,017 (2023) |
| Truck Traffic | 9% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 723 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 028402020006800 |