Boyd Cooney Dam RD over Rock Creek 027
Fair Condition53 years old593 vehicles/day
Location
| State | Montana |
| County | Carbon |
| Location | 1m W Boyd |
| Carries | Boyd Cooney Dam RD |
| Crosses | Rock Creek 027 |
| Coordinates | 45.45771, -109.08000 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 153.9 ft (46.9 m) |
| Max Span | 75.1 ft (22.9 m) |
| Deck Width | 25.9 ft (7.9 m) |
| Deck Area | 370.5 sq m |
| Main Spans | 2 |
| Year Built | 1973 |
Traffic
| Avg Daily Traffic | 593 (2023) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | November 2023 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | L05001000+08001 |