Fee Tpk NB Ramp 4 over Ramp 3b
Good Condition29 years old66,228 vehicles/day
Location
| State | New Hampshire |
| County | Hillsborough |
| Location | .02 Mi From Robinson RD |
| Carries | Fee Tpk NB Ramp 4 |
| Crosses | Ramp 3b |
| Coordinates | 42.73505, -71.45820 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 122.0 ft (37.2 m) |
| Max Span | 65.0 ft (19.8 m) |
| Deck Width | 104.0 ft (31.7 m) |
| Deck Area | 1179.2 sq m |
| Main Spans | 1 |
| Year Built | 1997 |
Traffic
| Avg Daily Traffic | 66,228 (2023) |
| Truck Traffic | 7% |
| Lanes On Bridge | 6 |
| Lanes Under Bridge | 1 |
Inspection & Ownership
| Last Inspection | 424 |
| Inspection Frequency | Every 24 months |
| Owner | State Toll Authority |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 017701340007300 |