About Us

Our firm was founded over sixty years ago alongside the idea that we, as people, are engineering more than infrastructure; we are engineering quality of life. Doing this requires both a balanced approach and committed people working together to bring your vision to life. In short, we believe that every experience you have with us should be nothing short of exceptional. We follow these three principles:

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Clark Dietz engineers are motivated by a collective passion to improve quality of life, delivering infrastructure solutions that have a positive and long lasting impact on people, the natural environment, and the economic well-being of our community partners.

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At the heart of our organization is an experienced and driven engineering team. Because we bring a powerful combination of local knowledge, strong community relationships and technical expertise, you can rest assured your vision will be realized. We deliver on the promised. Every time.

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Client Service

Clark Dietz Engineering has a long history of providing responsive service and innovative solutions to clients vested in the success of the built environment. Clark Dietz continues to stand on the principles of clients first, integrity in practice, and a strong and honest work ethic.

Meet Our Leaders

John Boldt, PE
John Boldt, PEChairman of the Board
Chip Craddock, PE
Chip Craddock, PECEO / President
Jerald Payonk, PE
Jerald Payonk, PEExecutive Vice President / Director of Engineering

Our Clients

“Clark Dietz has become a trusted partner in providing infrastructure to meet the current and future demands of our growing community. We have come to trust their integrity, timeliness and ability to complete our projects with an exceptional level of service and quality. I highly recommend Clark Dietz to municipalities that have a long-term vision for their communities and are seeking a partner who understands their growth objectives.”

Wayne Aldrich, PE, Director of Public Works

“One of the primary benefits of working with Clark Dietz is the field knowledge that their designers possess. I have found continuously that project designs and project schedules are implemented without much complication. Their knowledge of materials, process, and IDOT standards is demonstrated in the product they provide. Their attention to detail and ability to resolve issues promptly and quickly avoids costly change orders…”

Todd Baker, Superintendent
Read Client Testimonials

Our Culture

We Make a Difference

We understand infrastructure is vital and we never forget its importance. Our ultimate reward comes from collaborating with our clients and generating solutions that provide real benefit to people’s everyday lives.

We Give Back

Our world is stronger when we work together. Clark Dietz Engineering staff volunteer their time, expertise, and leadership to communities around the globe to help create stronger, healthier places everyone.

We Embrace Diversity

Our innovative, diverse and collaborative environment respects everyone’s unique perspective and promotes individual and team growth. That means better people, solutions, and service to our clients.