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Dakota Mill and Grain

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Tri-State Mill; Hubbard Mill
1937–1938, T.E. Ibberson. 416 Omaha St.
  • (Photograph by Michelle Dennis)

The Dakota Mill and Grain facility is located in downtown Rapid City on the south bank of Rapid Creek, adjacent to the rail lines on the east and south.

Originally begun as the Tri-State Milling Company, construction on the facility began in 1937 and was completed the following year. The T.E. Ibberson Company of Minneapolis (a city that had been a center for flour milling for decades) designed and built the plant, which included a concrete grain elevator, warehouse, and six-story feed mill equipped with up-to-date machinery. The feed mill, which produced 600 barrels of flour a day, is an architectural composition of horizontal and vertical lines, forming a gridded pattern. The center bay of the reinforced concrete and brick structure features large, rectangular glass-block windows on each level; two vertical strips of glass-block windows are on the outer bays. Vertical concrete piers run the fill height of the building, separating the bays, and the top floor is set off by a horizontal concrete band. A fluted cornice caps the composition, lending an elegance to the industrial building.

The mill expanded following World War II, and by the 1960s was producing 2,700 100-pound bags per day. The mill expanded again in 1965 with the construction of eight large feed storage tanks and a modern dispensing system. Tri-State went on to become one of the largest and most successful milling companies in South Dakota. In 1970, Tri-State was sold to Hubbard Milling Company of Mankato, Minnesota, and then to Dakota Grain and Feed, which operates the mill today.


Erpestad, David, and David Wood. Building South Dakota. Pierre: South Dakota State Historical Society Press, 1997.

Writing Credits

Michelle L. Dennis



  • 1937


What's Nearby


Michelle L. Dennis, "Dakota Mill and Grain", [Rapid City, South Dakota], SAH Archipedia, eds. Gabrielle Esperdy and Karen Kingsley, Charlottesville: UVaP, 2012—,

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