US 89 over Big Muddy Creek
Good Condition16 years old609 vehicles/day
Location
| State | Montana |
| County | Teton |
| Location | Bynum |
| Carries | US 89 |
| Crosses | Big Muddy Creek |
| Coordinates | 47.98430, -112.31522 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 312.7 ft (95.3 m) |
| Max Span | 62.7 ft (19.1 m) |
| Deck Width | 38.4 ft (11.7 m) |
| Deck Area | 1115.0 sq m |
| Main Spans | 5 |
| Year Built | 2010 |
Traffic
| Avg Daily Traffic | 609 (2023) |
| Truck Traffic | 5% |
| Lanes On Bridge | 2 |
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 | P00003055+06641 |