Civil Engineering go Results Found: 3 Button group with nested dropdown DGR Engineering Bronze DGR Engineering 1300 S Highline Avenue Sioux Falls SD 57110 (605) 339-4157 Gold Infrastructure Design Group, Inc. 3241 E. Bison Trail Sioux Falls SD 57032 (605) 271-5527 Gold Stockwell Engineers Inc. 801 N. Phillips Ave Suite 100 Sioux Falls SD 57104 (605) 338-6668