120th Street over Coal Creek
Fair Condition49 years old8,097 vehicles/day
Location
| State | Colorado |
| County | Boulder |
| Location | 0.25 M S Of S. Boulder RD |
| Carries | 120th Street |
| Crosses | Coal Creek |
| Coordinates | 39.98233, -105.07189 |
Condition Ratings
| Overall Condition | Fair |
| Channel/Waterway | 7 (Good) |
| Culvert | 5 (Fair) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Culvert |
| Total Length | 44.9 ft (13.7 m) |
| Max Span | 16.4 ft (5 m) |
| Deck Width | 34.1 ft (10.4 m) |
| Deck Area | 142.5 sq m |
| Main Spans | 3 |
| Year Built | 1977 |
Traffic
| Avg Daily Traffic | 8,097 (2023) |
| Truck Traffic | 24% |
| Lanes On Bridge | 2 |
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 | LAF-120TH-002 |