Golden Center Freeway / McKnight Way Interchange
Grass Valley, CA
MTJ Roundabout Engineering’s Mark Johnson was the designer/reviewer responsible for operational analysis and final horizontal geometrics for this roundabout serving a major interstate.
This challenging roundabout project includes two 6-leg interchange ramp terminal roundabouts.
Key to this effort was developing a design that was sensitive to ROW impacts, existing infrastructure and business access, while ensuring safety and access for all modes of travel.
MTJ’s extensive roundabout design experience played a pivotal role in achieving the correct roundabout design solution for this application of two roundabouts.
- Closely spaced existing frontage road
- Evaluated feasibility of 6-leg roundabout vs. two closely spaced roundabouts
- Constrained urban context
- Utilization of existing bridge structure