County Road 47 over St. Vrain Supply Canal
Fair Condition29 years old316 vehicles/day
Location
| State | Colorado |
| County | Boulder |
| Location | 2.7 Miles North Of State |
| Carries | County Road 47 |
| Crosses | St. Vrain Supply Canal |
| Coordinates | 40.24579, -105.22505 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Single/Spread |
| Total Length | 54.1 ft (16.5 m) |
| Max Span | 49.2 ft (15 m) |
| Deck Width | 37.4 ft (11.4 m) |
| Deck Area | 188.1 sq m |
| Main Spans | 1 |
| Year Built | 1997 |
Traffic
| Avg Daily Traffic | 316 (2023) |
| Truck Traffic | 16% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 125 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | BC-47-0.1-ID1 |