A milestone moment reflecting growth, momentum, and regional impact.

For the first time in over a decade, Clark Dietz, Inc. has rejoined the Engineering News-Record (ENR) Top 500 Design Firms list. This year’s placement at No. 437 represents the firm’s highest ranking to date. The milestone reflects Clark Dietz’s continued growth, technical excellence, and unwavering commitment to building stronger, more connected communities through infrastructure.

The ENR Top 500 is an annual industry benchmark that ranks U.S.-based engineering firms based on design revenue from the previous year. Clark Dietz’s return to the list marks a new chapter of national recognition for a firm that has long been rooted in Midwestern values and a people-first approach to engineering.

“This recognition is a reflection of the heart, passion, and commitment of every person at Clark Dietz,” said Wes Christmas, PE, MBA, CEO of Clark Dietz. “We don’t just design infrastructure — we build stronger, more connected communities. Earning a place on the ENR Top 500 is a proud milestone, but it’s just a stop along the way. Together, we will drive meaningful growth and deliver engineering solutions that make a lasting difference in the communities where we live and work.”

With offices across Wisconsin, Michigan, Indiana, Illinois, and Kentucky, Clark Dietz brings together multi-disciplinary teams to deliver client-focused solutions that enhance everyday life. The firm’s services span transportation, traffic, bridges and structures, water, wastewater, stormwater, civil and environmental engineering, and mechanical and electrical design.

Inclusion in the ENR Top 500 not only highlights the firm’s strategic progress but also its dedication to practical, sustainable solutions that serve both present and future infrastructure needs. It’s a reflection of years of collaboration, leadership, and a shared purpose across all regions.

As Clark Dietz celebrates this milestone, the company remains focused on its mission to engineer quality of life — designing infrastructure that improves lives today while preparing communities for a resilient future.

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