Glass DR over Helena Valley Canal 150
Fair Condition68 years old611 vehicles/day
Location
| State | Montana |
| County | Lewis and Clark |
| Location | 11m N Helena |
| Carries | Glass DR |
| Crosses | Helena Valley Canal 150 |
| Coordinates | 46.71720, -111.99972 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| 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 | 22.3 ft (6.8 m) |
| Max Span | 21.3 ft (6.5 m) |
| Deck Width | 26.6 ft (8.1 m) |
| Deck Area | 55.1 sq m |
| Main Spans | 1 |
| Year Built | 1958 |
Traffic
| Avg Daily Traffic | 611 (2023) |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | November 2024 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | L25128001+09001 |