Our Winkelman office was originally founded by Don Winkelman, Sr. and his sons in 1969, providing services in Central Minnesota as a general contractor focused on commercial and institutional construction.
In 1983, two of the company’s long-term employees, Duane Schultz and Keith Schupp, purchased and began to grow the family-owned business. Over the years the Winkelman office built upon its knowledge and reputation to become a regional full-service construction company working primarily in Central Minnesota but also in Wisconsin, North Dakota and Iowa. In 2017, the firm transitioned through Duane Schultz's daughter-in-law to the Bradbury Stamm family of companies and continues to work to enhance their capabilities and to support their local markets.
Phone: 320.253.2411 | Fax: 320.253.2324
340 Highway 10 South, St. Cloud, MN 56304