City of Sioux Falls

Sioux Falls, SD

Key Features:

  • Addition of three mainline 13.8 kV distribution circuits
  • Circuits were built in underground fashion to increase reliability and improve aesthetics

Key Experience:

  • Coordinating with multiple City of Sioux Falls departments, other utilities, and railroad authorities
  • Integrating traffic control provisions associated with construction in busy areas
  • Responsibility and involvement in all phases of the project


Mainline Distribution Circuits

The project included the construction of three new mainline 13.8 kV circuits on the City’s distribution system to increase capacity and reliability.   The circuits were built in underground fashion; two extending from the City’s substation near the airport to the downtown area, and one extending from the City’s substation near the airport to the event center.  DGR services for this project included the initial study work, project development, engineering design, permitting, construction administration, and resident construction observation.

Featured Projects

  • All
  • Aviation
  • Civil
  • Electrical Power
  • Survey
  • Wastewater
  • Water

Floodplain Analysis

DGR employed a Geographic Information System (GIS) in conjunction with the U.S. Army Corps of Engineers to first determine the 100-year flood elevations and delineate the floodway boundaries.

Floodplain Analysis
Sutherland, IA

Distribution Conversion

Due to concerns with the age and condition of the structures, along with safety clearances to energized equipment and conductors, a project was undertaken to replace the old infrastructure with new underground lines and associated padmount equipment.

Distribution Conversion
Redwood Falls, MN

Street & Utility Improvements

Morningside Avenue was reconstructed totaling approximately 1,300 linear feet. The project included new sanitary sewer, water main, storm sewer, fiber conduits, decorative street lighting, and 9-inch concrete paving with colored concrete sidewalks.

Street & Utility Improvements
Sioux City, IA

Wastewater Treatment Facility (SBR)

The City ultimately determined a flow-through style SBR system to be the preferred choice based on the selection criteria and the ability to meet anticipated permit limits.

Wastewater Treatment Facility (SBR)
Orange City, IA

Site Development

Planning started with site plan design for the new facility to offer maximum exposure to traffic on Highway 75.

Site Development
Rock Rapids, IA

Wastewater Treatment Facility (SBR)

The new plant, rated for 5.3 million gallons per day (MGD) peak day, doubles the capacity of its predecessor.

Wastewater Treatment Facility (SBR)
Sheldon, IA