N Montana AVE over Helena Valley Canal
Fair Condition68 years old11,167 vehicles/day
Location
| State | Montana |
| County | Lewis and Clark |
| Location | 1m N Helena |
| Carries | N Montana AVE |
| Crosses | Helena Valley Canal |
| Coordinates | 46.62864, -112.02117 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 8 (Very Good) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Slab |
| Total Length | 24.6 ft (7.5 m) |
| Max Span | 23.3 ft (7.1 m) |
| Deck Width | 56.4 ft (17.2 m) |
| Deck Area | 129 sq m |
| Main Spans | 1 |
| Year Built | 1958 (reconstructed 2005) |
Traffic
| Avg Daily Traffic | 11,167 (2023) |
| Truck Traffic | 1% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | December 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | U05809002+02701 |