E 9th Avenue over Oligarchy Ditch
Fair Condition22 years old12,630 vehicles/day
Location
| State | Colorado |
| County | Boulder |
| Location | 100 Ft E Of Alpine Street |
| Carries | E 9th Avenue |
| Crosses | Oligarchy Ditch |
| Coordinates | 40.17388, -105.08188 |
Condition Ratings
| Overall Condition | Fair |
| Channel/Waterway | 8 (Very Good) |
| Culvert | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Culvert |
| Total Length | 82.3 ft (25.1 m) |
| Max Span | 24.0 ft (7.3 m) |
| Deck Width | 88.3 ft (26.9 m) |
| Deck Area | 675.2 sq m |
| Main Spans | 3 |
| Year Built | 2004 |
Traffic
| Avg Daily Traffic | 12,630 (2023) |
| Truck Traffic | 10% |
| Lanes On Bridge | 5 |
Inspection & Ownership
| Last Inspection | 125 |
| Inspection Frequency | Every 24 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | LONG-E9TH-ALP-A |