Civil Engineering go Results Found: 3 Button group with nested dropdown Gold Stockwell Engineers Inc. 801 N. Phillips Ave Suite 100 Sioux Falls SD 57104 (605) 338-6668 Houston Engineering, Inc. Silver Houston Engineering, Inc. 4009 W 49th Street Suite 101 Sioux Falls SD 57106 (605) 271-0378 DGR Engineering Bronze DGR Engineering 1300 S Highline Avenue Sioux Falls SD 57110 (605) 339-4157