South Main Street over Nissitissit River
Good Condition95 years old3,553 vehicles/day
Location
| State | New Hampshire |
| County | Hillsborough |
| Location | 1.45 Mi N Mass Sl |
| Carries | South Main Street |
| Crosses | Nissitissit River |
| Coordinates | 42.72189, -71.65947 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Frame |
| Total Length | 27.9 ft (8.5 m) |
| Max Span | 24.9 ft (7.6 m) |
| Deck Width | 27.9 ft (8.5 m) |
| Deck Area | 72.2 sq m |
| Main Spans | 1 |
| Year Built | 1931 (reconstructed 1993) |
Traffic
| Avg Daily Traffic | 3,553 (2023) |
| Truck Traffic | 4% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 624 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is possibly eligible (requires evaluation) |
| Structure Number | 003400950006100 |