US 89 over Rock Creek
Fair Condition42 years old1,457 vehicles/day
Location
| State | Montana |
| County | Park |
| Location | 2m SE Clyde Park |
| Carries | US 89 |
| Crosses | Rock Creek |
| Coordinates | 45.84813, -110.57913 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 5 (Fair) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 79.1 ft (24.1 m) |
| Max Span | 29.9 ft (9.1 m) |
| Deck Width | 46.3 ft (14.1 m) |
| Deck Area | 339.8 sq m |
| Main Spans | 3 |
| Year Built | 1984 |
Traffic
| Avg Daily Traffic | 1,457 (2023) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | November 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | P00059012+02781 |