CSAH 50 at CSAH 60 Roundabout

Services Transportation Design, Planning & Traffic Engineering, Land Surveying & Mapping, Community Engagement, Traffic Analysis, Environmental Documentation, Final Design, Preliminary Design
Client Dakota County
Estimated Construction Cost $6.0M
Location Lakeville, MN

Project Overview

We provided design services including environmental documentation (project memorandum), survey, preliminary and final design, drainage design, utility improvements, landscaping, and lighting design for a multi-lane roundabout at the intersection of CSAH 50 (Kenwood Trail) and CSAH 60 (185th Street) in Lakeville, Minnesota. In addition to the intersection, this project also included four-lane extensions of CSAH 60 to the west and CSAH 50 to the north.

The project was constructed with a full road closure and detour. Local access was maintained for the businesses and residents along the project.

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CSAH 50 at CSAH 60 Layout
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Beyond Design

Our surveying work on this project included topographic and right-of-way surveys. Our public outreach work 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, we 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 pedestrian and bike movements. We also worked with local neighborhoods to address concerns related to access management and safety.

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Community Responsibility

We partnered with Dakota County to develop a customized public involvement approach focused on educating the public on the benefits of the multi-lane roundabout for this location. Roundabout elements of interest to different user groups such as pedestrian and bike movements were identified. We then customized outreach materials for those groups.

Our public outreach campaign included hands-on exhibits, interactive website animations, and large-scale public open houses with over 30 different displays. We created educational brochures, posters, and exhibits on various roundabout operations. Our team facilitated property owner meetings and public open houses necessary for the success of the project.