US 191 Fh 42 over West Gallatin River
Fair Condition67 years old2,325 vehicles/day
Location
| State | Montana |
| County | Gallatin |
| Location | 17m SE Big Sky |
| Carries | US 191 Fh 42 |
| Crosses | West Gallatin River |
| Coordinates | 45.06512, -111.18251 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 7 — Countermeasures installed |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Tee Beam |
| Total Length | 122.0 ft (37.2 m) |
| Max Span | 44.9 ft (13.7 m) |
| Deck Width | 33.5 ft (10.2 m) |
| Deck Area | 379.4 sq m |
| Main Spans | 3 |
| Year Built | 1959 |
Traffic
| Avg Daily Traffic | 2,325 (2023) |
| Truck Traffic | 11% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 723 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | P00050032+07581 |