I-93 SB over Nhrr
Good Condition56 years old7,613 vehicles/day
Location
| State | New Hampshire |
| County | Grafton |
| Location | 0.4 Mi Thornton Tl |
| Carries | I-93 SB |
| Crosses | Nhrr |
| Coordinates | 43.86316, -71.65749 |
Condition Ratings
| Overall Condition | Good |
| Deck | 8 (Very Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 187.0 ft (57 m) |
| Max Span | 67.9 ft (20.7 m) |
| Deck Width | 44.0 ft (13.4 m) |
| Deck Area | 763.8 sq m |
| Main Spans | 3 |
| Year Built | 1970 (reconstructed 2003) |
Traffic
| Avg Daily Traffic | 7,613 (2023) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 423 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 003501280014800 |