US 89 over Muddy Creek
Good Condition24 years old5,732 vehicles/day
Location
| State | Montana |
| County | Cascade |
| Location | Vaughn |
| Carries | US 89 |
| Crosses | Muddy Creek |
| Coordinates | 47.55867, -111.54217 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 166.0 ft (50.6 m) |
| Max Span | 54.8 ft (16.7 m) |
| Deck Width | 65.0 ft (19.8 m) |
| Deck Area | 1001.9 sq m |
| Main Spans | 3 |
| Year Built | 2002 |
Traffic
| Avg Daily Traffic | 5,732 (2023) |
| Truck Traffic | 3% |
| Lanes On Bridge | 4 |
Inspection & Ownership
| Last Inspection | 324 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | P00003000+04151 |