CHESTERFIELD, MO. — St. Louis-based Walton Construction Co. has been selected to serve as general contractor for the development of Chesterfield Medical Institute, a $6.7 million medical facility located at 1001 Chesterfield Pkwy. East in Chesterfield. The two-story building will house three medical practices, including Laser & Dermatologic Surgery Center, West County Dermatology and Generation Dental Group. Feeler-Sheer Architects will provide design services for the project.