Immunity and Accountability


June 8, 2022

CSI is a third-generation, family-owned construction company based in Minnesota. It was founded in 1976 by Al Minnerath, a former Air Force officer who served in the Korean War and, after his service, sought to bring next-level service to the world of highway construction. When Al retired, he placed the company under the leadership of one of his seven sons, Allan Minnerath, who continues as the company’s President and CEO today.

Under Allan’s leadership, the company has grown to 350 employees and focuses on building roads and highways in the Midwest.