9th Street over Boulder Creek
Fair Condition48 years old14,000 vehicles/day
Location
| State | Colorado |
| County | Boulder |
| Location | 0.08 Mi N Of Arapahoe AVE |
| Carries | 9th Street |
| Crosses | Boulder Creek |
| Coordinates | 40.01398, -105.28335 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Single/Spread |
| Total Length | 145.0 ft (44.2 m) |
| Max Span | 68.9 ft (21 m) |
| Deck Width | 50.9 ft (15.5 m) |
| Deck Area | 685.1 sq m |
| Main Spans | 2 |
| Year Built | 1978 |
Traffic
| Avg Daily Traffic | 14,000 (2021) |
| Truck Traffic | 4% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 225 |
| Inspection Frequency | Every 24 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | BOLD-02-0.08-01 |