Blackwater Road over Mascoma River
Good Condition34 years old510 vehicles/day
Location
| State | New Hampshire |
| County | Grafton |
| Location | 0.8 Mi US 4 |
| Carries | Blackwater Road |
| Crosses | Mascoma River |
| Coordinates | 43.64274, -72.11257 |
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 | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 103.0 ft (31.4 m) |
| Max Span | 100.1 ft (30.5 m) |
| Deck Width | 30.5 ft (9.3 m) |
| Deck Area | 292.0 sq m |
| Main Spans | 1 |
| Year Built | 1992 |
Traffic
| Avg Daily Traffic | 510 (2023) |
| Truck Traffic | 4% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 924 |
| Inspection Frequency | Every 24 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 003600910003000 |