US 87 over S Fork Mcdonald Creek
Fair Condition87 years old1,067 vehicles/day
Location
| State | Montana |
| County | Fergus |
| Location | 1m N Grass Range |
| Carries | US 87 |
| Crosses | S Fork Mcdonald Creek |
| Coordinates | 47.04099, -108.81231 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Wood or Timber |
| Design | Stringer/Multi-beam |
| Total Length | 100.7 ft (30.7 m) |
| Max Span | 24.9 ft (7.6 m) |
| Deck Width | 29.9 ft (9.1 m) |
| Deck Area | 279.4 sq m |
| Main Spans | 4 |
| Year Built | 1939 |
Traffic
| Avg Daily Traffic | 1,067 (2023) |
| Truck Traffic | 11% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | P00057112+05571 |