I-89 NB over US 4 Nh 10
Good Condition60 years old22,727 vehicles/day
Location
| State | New Hampshire |
| County | Grafton |
| Location | 2.6 Mi From Vt Sl |
| Carries | I-89 NB |
| Crosses | US 4 Nh 10 |
| Coordinates | 43.63789, -72.28118 |
Condition Ratings
| Overall Condition | Good |
| Deck | 9 (Excellent) |
| Superstructure | 9 (Excellent) |
| Substructure | 8 (Very Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 115.2 ft (35.1 m) |
| Max Span | 107.9 ft (32.9 m) |
| Deck Width | 61.4 ft (18.7 m) |
| Deck Area | 656.4 sq m |
| Main Spans | 1 |
| Year Built | 1966 |
Traffic
| Avg Daily Traffic | 22,727 (2023) |
| Truck Traffic | 9% |
| Lanes On Bridge | 3 |
| Lanes Under Bridge | 4 |
Inspection & Ownership
| Last Inspection | November 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 014400930010900 |