S 308 over Rock Creek
Good Condition23 years old1,253 vehicles/day
Location
| State | Montana |
| County | Carbon |
| Location | Red Lodge |
| Carries | S 308 |
| Crosses | Rock Creek |
| Coordinates | 45.17394, -109.24998 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 9 (Excellent) |
| Scour Critical | 4 — Foundations need monitoring |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Tee Beam |
| Total Length | 72.2 ft (22 m) |
| Max Span | 72.2 ft (22 m) |
| Deck Width | 47.2 ft (14.4 m) |
| Deck Area | 316.8 sq m |
| Main Spans | 1 |
| Year Built | 2003 |
Traffic
| Avg Daily Traffic | 1,253 (2023) |
| Truck Traffic | 2% |
| 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 | S00308000+01001 |