US 4 Nh 16 Sp Tpk over Shawayttuck
Good Condition43 years old68,236 vehicles/day
Location
| State | New Hampshire |
| County | Rockingham |
| Location | 2.5 Mi From Portsmouth T |
| Carries | US 4 Nh 16 Sp Tpk |
| Crosses | Shawayttuck |
| Coordinates | 43.11546, -70.82268 |
Condition Ratings
| Overall Condition | Good |
| Deck | 8 (Very Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Concrete |
| Design | Frame |
| Total Length | 47.9 ft (14.6 m) |
| Max Span | 42.0 ft (12.8 m) |
| Deck Width | 167.3 ft (51 m) |
| Deck Area | 744.6 sq m |
| Main Spans | 1 |
| Year Built | 1983 (reconstructed 2021) |
Traffic
| Avg Daily Traffic | 68,236 (2023) |
| Truck Traffic | 8% |
| Lanes On Bridge | 4 |
| Lanes Under Bridge | 2 |
Inspection & Ownership
| Last Inspection | 423 |
| Inspection Frequency | Every 24 months |
| Owner | State Toll Authority |
| Historical Significance | Bridge is possibly eligible (requires evaluation) |
| Structure Number | 018501030012400 |