Dakota County selected Stonebrooke Engineering to design a multi-lane roundabout at the intersection of CSAH 50 (Kenwood Trail) and CSAH 60 (185th Street) in Lakeville. Our team was chosen for our unmatched roundabout expertise and proven project experience. In addition to the intersection, this project also includes 4-lane extensions of CSAH 60 to the west and CSAH 50 to the north. Design services include preliminary and final design plans for roadway geometrics, profiles, bituminous surfacing, drainage design, utility improvements, landscaping, roundabout design, and lighting.
Our surveying work on this project included topographic and right-of-way surveys. Our public outreach work on this project included elected official meetings, property owner meetings, local business owner meetings, and public open houses. Based on vehicular capacities, this will be one of the busiest multi-lane roundabouts in North America. For this reason, Stonebrooke customized our public outreach into an education campaign that educated users of this intersection about roundabout operations and also provided a more widespread understanding of the corridor as a whole. We worked closely with Dakota County to decide which elements of roundabouts would be the most relevant to this audience, such as pedestrain and bike movements. We also worked with local neighborhoods to address concerns related to access management and safety.
Our public outreach campaign included hands-on exhibits, interactive web site animations, and large scale public open houses with over 30 different displays. We created educational brochures, posters, and exhibits on various roundabout operations.
As part of the environmental documentation for this project, Stonebrooke prepared and submitted a Project Memorandum which included a social, economic, and environmental study that analyzed the impacts of this project on historic properties, endangered species, right-of-way, water quality, wetlands, floodplains, noise, and air quality.
The project was constructed with a full road closure and detour. Local access was maintained for the businesses and residents along the project.