I-93 SB over Nh 18
Good Condition40 years old3,926 vehicles/day
Location
| State | New Hampshire |
| County | Grafton |
| Location | 6.6 Mi From Vt Sl |
| Carries | I-93 SB |
| Crosses | Nh 18 |
| Coordinates | 44.31724, -71.79779 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 100.1 ft (30.5 m) |
| Max Span | 95.1 ft (29 m) |
| Deck Width | 44.6 ft (13.6 m) |
| Deck Area | 414.8 sq m |
| Main Spans | 1 |
| Year Built | 1986 |
Traffic
| Avg Daily Traffic | 3,926 (2023) |
| Truck Traffic | 9% |
| Lanes On Bridge | 2 |
| Lanes Under 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 | 015301880008000 |