US 12 over Drainage
Poor Condition79 years old222 vehicles/day
Location
| State | Montana |
| County | Rosebud |
| Location | 4m E Sumatra |
| Carries | US 12 |
| Crosses | Drainage |
| Coordinates | 46.60692, -107.47370 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 4 (Poor) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Wood or Timber |
| Design | Stringer/Multi-beam |
| Total Length | 58.1 ft (17.7 m) |
| Max Span | 19.0 ft (5.8 m) |
| Deck Width | 25.9 ft (7.9 m) |
| Deck Area | 139.8 sq m |
| Main Spans | 3 |
| Year Built | 1947 |
Traffic
| Avg Daily Traffic | 222 (2023) |
| Truck Traffic | 14% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 924 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | P00014224+06031 |