Lone Mountain Trl over Middle Fk W Gallatin 004
Fair Condition47 years old9,730 vehicles/day
Location
| State | Montana |
| County | Gallatin |
| Location | Big Sky-lone Mountain Trl |
| Carries | Lone Mountain Trl |
| Crosses | Middle Fk W Gallatin 004 |
| Coordinates | 45.26480, -111.31640 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 4 (Poor) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 209.0 ft (63.7 m) |
| Max Span | 75.1 ft (22.9 m) |
| Deck Width | 36.1 ft (11 m) |
| Deck Area | 700.7 sq m |
| Main Spans | 3 |
| Year Built | 1979 |
Traffic
| Avg Daily Traffic | 9,730 (2023) |
| Truck Traffic | 1% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 724 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | L16064003+04741 |