MITCHELL, S.D. (MITCHELLNOW) The South Dakota Department of Transportation is seeking public input on a transportation plan for the Chamberlain area. An open house will be held today from 5:30 to 7 p.m., at the Chamberlain Area Community Center. Residents will learn about proposed development and the redesign of portions of Highway 50 and Interstate 90. Written comments will be accepted until March 27th.