Chicago RD over Twelve Mile Creek 093
Good Condition37 years old100 vehicles/day
Location
| State | Montana |
| County | Yellowstone |
| Location | 4m SW Shepherd |
| Carries | Chicago RD |
| Crosses | Twelve Mile Creek 093 |
| Coordinates | 45.90637, -108.37522 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 5 (Fair) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Tee Beam |
| Total Length | 62.0 ft (18.9 m) |
| Max Span | 60.0 ft (18.3 m) |
| Deck Width | 30.8 ft (9.4 m) |
| Deck Area | 177.7 sq m |
| Main Spans | 1 |
| Year Built | 1989 |
Traffic
| Avg Daily Traffic | 100 (2025) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 523 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | L56749000+05001 |