Petrolia Lake RD over Mcdonald Creek 014
Fair Condition46 years old100 vehicles/day
Location
| State | Montana |
| County | Petroleum |
| Location | 6m E Winnett |
| Carries | Petrolia Lake RD |
| Crosses | Mcdonald Creek 014 |
| Coordinates | 46.99833, -108.23066 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 7 (Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Tee Beam |
| Total Length | 78.1 ft (23.8 m) |
| Max Span | 75.1 ft (22.9 m) |
| Deck Width | 26.2 ft (8 m) |
| Deck Area | 190.4 sq m |
| Main Spans | 1 |
| Year Built | 1980 |
Traffic
| Avg Daily Traffic | 100 (2025) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 424 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | L35007000+08001 |