County Road 9 over Boulder Creek
Fair Condition66 years old59 vehicles/day
Location
| State | Colorado |
| County | Boulder |
| Location | 0.3 Mi N Of Co RD 42 |
| Carries | County Road 9 |
| Crosses | Boulder Creek |
| Coordinates | 40.05987, -105.09793 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Tee Beam |
| Total Length | 76.8 ft (23.4 m) |
| Max Span | 34.8 ft (10.6 m) |
| Deck Width | 28.2 ft (8.6 m) |
| Deck Area | 201.2 sq m |
| Main Spans | 2 |
| Year Built | 1960 |
Traffic
| Avg Daily Traffic | 59 (2023) |
| Truck Traffic | 27% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 225 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | BC-9-0.9-BO |