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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 70 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, Sioux City and Sioux Center, Iowa, as well as Sioux Falls, Rapid City and Belle Fourche,
South Dakota 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 2023 “Circle of Excellence”. DGR has earned this honor every year since 2014.

Sanitary Sewer Rehabilitation

The project was bid and came in under budget. Manhole lids were raised to provide better access in some areas, and rehabilitation of the sewer system was completed to give another 50 years of life to the City’s much-needed infrastructure.

Sanitary Sewer Rehabilitation
Rembrandt, IA

Street & Utility Improvements

This project consisted of 3,700 L.F. of street improvements on 15th Street from Old Highway 77 to Clark Avenue in Dell Rapids.  Also included in this project were improvements to the water main, sanitary sewer and storm sewer in conjunction with street improvements.

Street & Utility Improvements
Dell Rapids, SD

Site Design

Projects included were the expansion of the existing convention center, construction of a 150-room hotel, as well as construction of a 140-space parking deck.

Site Design
Sioux City, IA

Sanitary Sewer

The City of Sioux City needed a large diameter trunk sewer to carry flows from new residential development and future development on the east side of town to the existing Southeast Morningside Lift Station.

Sanitary Sewer
Sioux City, IA

Street & Utility Improvements

This project encompassed eight downtown alley blocks over a single construction season.

Street & Utility Improvements
Madison, SD

Digester Improvements Project

Analyzed digester cover and mixing system alternatives due to condition of existing plant equipment. Selected cover and mixing system to best fit the City’s request for potential future digester gas re-use to reduce plant operational expenses.

Digester Improvements Project
Estherville, IA