Colby Road over Piscataquog River
Good Condition64 years old682 vehicles/day
Location
| State | New Hampshire |
| County | Hillsborough |
| Location | 0.17 Mi River Road |
| Carries | Colby Road |
| Crosses | Piscataquog River |
| Coordinates | 43.05151, -71.65413 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 57.1 ft (17.4 m) |
| Max Span | 51.8 ft (15.8 m) |
| Deck Width | 21.0 ft (6.4 m) |
| Deck Area | 111.4 sq m |
| Main Spans | 1 |
| Year Built | 1962 |
Traffic
| Avg Daily Traffic | 682 (2023) |
| Truck Traffic | 4% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 823 |
| Inspection Frequency | Every 24 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Bridge is possibly eligible (requires evaluation) |
| Structure Number | 026701640005200 |