CTH OK / CTH EE Roundabout Client: Sheboygan County Transportation Department Location: Sheboygan County, Wisconsin The CTH OK/EE intersection improvement was initiated by Sheboygan County to address a hazardous safety concerns and significant crash history. Accident rates at the intersection exceeded statewide averages and usually involved personal injuries. In order to minimize right-of-way and provide the improved safety, a roundabout was selected as the preferred alternative for the intersection modification. The roundabout is a 140-foot diameter, single-lane facility with bicycle and pedestrian accommodations. The west approach to the intersection was re- graded for 500 feet, eliminating a substandard vertical curve that blocked the view of on-coming traffic. The geometry was coordina

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