Building the foundation for everyday life, DGR Engineering has been making infrastructure work for over 70 years. Our projects in civil engineering, water systems, electrical distribution, and surveying are found all across the Midwest. We are committed to building projects that both our clients and employees can be proud of, reflecting our deep connection to the communities where we operate. With offices in Rock Rapids, Sioux City, and Sioux Center, Iowa, as well as Sioux Falls, Rapid City, and Belle Fourche, South Dakota, we share this foundation with our clients.

Recognized as one of the top engineering firms, DGR has been a repeat honoree in PSMJ Resources, Inc.'s “Circle of Excellence” every year since 2014. DGR Engineering specializes in aviation, civil, electrical power, survey, wastewater, and water engineering, providing comprehensive services for infrastructure development.