Lone Tree RD over Red Lodge Creek 045
Fair Condition54 years old100 vehicles/day
Location
| State | Montana |
| County | Carbon |
| Location | 1m NW Boyd |
| Carries | Lone Tree RD |
| Crosses | Red Lodge Creek 045 |
| Coordinates | 45.46823, -109.08955 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Tee Beam |
| Total Length | 67.9 ft (20.7 m) |
| Max Span | 67.9 ft (20.7 m) |
| Deck Width | 20.3 ft (6.2 m) |
| Deck Area | 128.3 sq m |
| Main Spans | 1 |
| Year Built | 1972 |
Traffic
| Avg Daily Traffic | 100 (2025) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 923 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | L05018001+07001 |