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At DGR Engineering, we build the foundation for every day. From roads and power lines to where parks and water intersect your life, we make it all work, and we’ve been doing it for more than 65 years. Our projects in civil engineering, water systems, electrical distribution and surveying can be
found all across the Midwest.

We build projects that both our clients and our employees can be proud of, because we live where we work. We have offices in Rock Rapids and Sioux City, IA as well as Sioux Falls, SD and we share that foundation with our clients.

As one of the top engineering firms in the country, DGR received notice that it was selected as a repeat honoree by PSMJ Resources, Inc. for inclusion in its 2020 “Circle of Excellence”. DGR has earned this honor every year since 2014.

Street and Utility Improvements

The City of Irene invested tax dollars and utility fees into significant reconstruction work, and successfully obtained a funding package which covered 74% of project costs.

Street and Utility Improvements
Irene, SD

Runway/Taxiway/Electrical Systems

DGR Engineering collaborated with a long-standing airport engineering partner at the Watertown, SD Regional Airport to provide electrical design and construction services for the airport including runway and taxiway lights, lighted signs and airport electrical systems upgrades.

Runway/Taxiway/Electrical Systems
Watertown, SD

Wastewater Treatment Facility

City of Orange City, IA prepared for the future by adding a mechanical treatment facility to meet both capacity and compliance.

Wastewater Treatment Facility
Orange City, IA

Wastewater Treatment Facility

Designed a SAGR system to be utilized as a polishing step following the City’s aerated lagoon system. The system includes a synthetic liner, aeration lines, rock media, an insulating mulch layer, control structures, and related piping.

Wastewater Treatment Facility
Hull, IA

Street Reconstruction

This project involved the reconstruction of approximately 8,500 linear feet of residential street including replacement of all utilities.

Street Reconstruction
Sioux City, IA

Campus Improvements

DGR worked with college staff to improve the surface drainage surrounding the East Campus apartments as well as enhancing the Campus Green Space.

Campus Improvements
Sioux Center, IA