North 55th Street over Boulder Creek
Fair Condition41 years old11,600 vehicles/day
Location
| State | Colorado |
| County | Boulder |
| Location | 0.1 Mi N Of Flatiron PKWY |
| Carries | North 55th Street |
| Crosses | Boulder Creek |
| Coordinates | 40.02569, -105.22533 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 8 (Very Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 200.5 ft (61.1 m) |
| Max Span | 94.2 ft (28.7 m) |
| Deck Width | 71.9 ft (21.9 m) |
| Deck Area | 1338.1 sq m |
| Main Spans | 2 |
| Year Built | 1985 |
Traffic
| Avg Daily Traffic | 11,600 (2023) |
| Truck Traffic | 10% |
| Lanes On Bridge | 4 |
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-08-0.30-02 |