Mountain Road over Blackwater River
Good Condition16 years old96 vehicles/day
Location
| State | New Hampshire |
| County | Merrimack |
| Location | Town RD 0.94 Mi Andover |
| Carries | Mountain Road |
| Crosses | Blackwater River |
| Coordinates | 43.40160, -71.79042 |
Condition Ratings
| Overall Condition | Good |
| Deck | 8 (Very Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 108.9 ft (33.2 m) |
| Max Span | 103.0 ft (31.4 m) |
| Deck Width | 26.9 ft (8.2 m) |
| Deck Area | 272.2 sq m |
| Main Spans | 1 |
| Year Built | 2010 |
Traffic
| Avg Daily Traffic | 96 (2023) |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2024 |
| Inspection Frequency | Every 24 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Bridge is eligible for the National Register |
| Structure Number | 022900950013500 |