True and responsive expertise – these qualities are the foundation on which ISG was built when Gene Isakson and Ken Surprenant started I&S Engineers in Surprenant’s basement in 1973 with a mission to provide civil engineering expertise to southern Minnesota. Today, more than 40 years later, ISG is employee owned and continues to help clients succeed while developing young professionals into strong leaders along the way.

Shortly after the company’s inception, Ken Surprenant and his wife Mary Jo took over sole ownership when Isakson left for another venture. At that time, the firm began to expand its business by adding other engineering services including structural, mechanical, and electrical. In 1993, Ken and Mary Jo’s son, Chad Surprenant, graduated with a degree in Civil Engineering and joined the firm. Over the years that followed, Chad began assuming significant management responsibilities, adding architecture to the firm’s service offerings and later being named company President in 2001. Under his leadership, the firm developed and grew significantly, adding the disciplines of land surveying, landscape architecture, environmental, and planning to its services.

Over the next several years, ISG’s reach continued to expand, opening additional office locations, while the firm’s expertise broadened. In January 2012, ISG merged with a long-standing civil engineering firm based out of northern Iowa, strengthening the firm’s overall team and expanding its geographic presence. In 2013, ISG acquired a reputable Mankato, Minnesota based design firm strengthening the firm’s architectural expertise. Two short years later, a project partner and respected industry peer from Green Bay was acquired bringing with them a stronghold in the Wisconsin area and reputable expertise in industrial and healthcare design.

With different iterations of the firm name that naturally occurred through the evolution of ISG, our full service firm has been branded with the formal name ISG since 2014, providing high-level architecture, engineering, environmental, and planning strategies, services, and guidance to a wide range of markets nationwide. In 2017, the firm became 100% employee owned.

Today, 230+ ISG staff members in eight Midwest offices foster strong collaboration between all the firm’s disciplines and provide clients a diverse knowledge base, broad perspective, and responsive delivery of integrated solutions. This true and responsive expertise ensures superior project completion and valuable, enduring relationships that benefit our clients now and into the future.

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