Structure BOLD-47-GLPNDR · Boulder County, CO
Carries Gilpin Drive over Bear Canyon Creek, 350 Ft S Of Evans DR.
A culvert 20 ft across. Lengths are drawn to scale; at this length a semi-truck would be a speck. Each part is colored by its latest inspection rating. The inventory records lengths but not heights, so those are drawn as typical for a culvert.
| State | Colorado |
| County | Boulder |
| Location | 350 Ft S Of Evans DR |
| Carries | Gilpin Drive |
| Crosses | Bear Canyon Creek |
| Coordinates | 40.00056, -105.24352 |
| Material | Concrete |
| Design | Culvert |
| Total Length | 20.3 ft (6.2 m) |
| Max Span | 20.3 ft (6.2 m) |
| Deck Width | 44.0 ft (13.4 m) |
| Deck Area | 83.1 sq m |
| Main Spans | 1 |
| Year Built | 1997 |
| Avg Daily Traffic | 281 (2023) |
| Truck Traffic | 4% |
| Lanes On Bridge | 2 |
| Last Inspection | February 2025 |
| Inspection Frequency | Every 24 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | BOLD-47-GLPNDR |
Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."
A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.