S 23 over Yellowstone River
Poor Condition32 years old2,438 vehicles/day
Location
| State | Montana |
| County | Richland |
| Location | 2m S Sidney |
| Carries | S 23 |
| Crosses | Yellowstone River |
| Coordinates | 47.67401, -104.15868 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 6 (Satisfactory) |
| Superstructure | 7 (Good) |
| Substructure | 4 (Poor) |
| Channel/Waterway | 5 (Fair) |
| Scour Critical | 3 — Scour critical |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 1102.0 ft (335.9 m) |
| Max Span | 240.2 ft (73.2 m) |
| Deck Width | 42.3 ft (12.9 m) |
| Deck Area | 4333.1 sq m |
| Main Spans | 5 |
| Year Built | 1994 |
Traffic
| Avg Daily Traffic | 2,438 (2023) |
| Truck Traffic | 7% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 524 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | P00026001+02341 |