I-93 NB over Ammonoosuc River
Fair Condition66 years old4,235 vehicles/day
Location
| State | New Hampshire |
| County | Grafton |
| Location | 2 Mi Bethlehem Tl |
| Carries | I-93 NB |
| Crosses | Ammonoosuc River |
| Coordinates | 44.30476, -71.79634 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Girder and Floorbeam |
| Total Length | 282.2 ft (86 m) |
| Max Span | 145.0 ft (44.2 m) |
| Deck Width | 43.0 ft (13.1 m) |
| Deck Area | 1126.6 sq m |
| Main Spans | 1 |
| Year Built | 1960 (reconstructed 1981) |
Traffic
| Avg Daily Traffic | 4,235 (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 | 015301880006000 |