John G Mine RD over Helena Valley Canal 116
Good Condition68 years old795 vehicles/day
Location
| State | Montana |
| County | Lewis and Clark |
| Location | 6m NW Helena |
| Carries | John G Mine RD |
| Crosses | Helena Valley Canal 116 |
| Coordinates | 46.68969, -112.04629 |
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 | Wood or Timber |
| Design | Stringer/Multi-beam |
| Total Length | 28.9 ft (8.8 m) |
| Max Span | 25.9 ft (7.9 m) |
| Deck Width | 27.2 ft (8.3 m) |
| Deck Area | 73.0 sq m |
| Main Spans | 1 |
| Year Built | 1958 |
Traffic
| Avg Daily Traffic | 795 (2023) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 225 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | L25658000+05001 |