S 261 over O`brien Creek
Fair Condition49 years old95 vehicles/day
Location
| State | Montana |
| County | Richland |
| Location | 9m S Sidney |
| Carries | S 261 |
| Crosses | O`brien Creek |
| Coordinates | 47.60378, -104.14222 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 102.0 ft (31.1 m) |
| Max Span | 50.9 ft (15.5 m) |
| Deck Width | 33.8 ft (10.3 m) |
| Deck Area | 320.3 sq m |
| Main Spans | 2 |
| Year Built | 1977 |
Traffic
| Avg Daily Traffic | 95 (2023) |
| Truck Traffic | 17% |
| 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 | S00261047+09001 |