Engineering Quality of Life
Clark Dietz, Inc. is a Midwest civil engineering practice founded more than 60 years ago and consistently recognized on the ENR Top 500 Design Firms list, placing No. 450 in 2026. Headquartered in Champaign, Illinois, with offices across Illinois, Indiana, Kentucky, Michigan, and Wisconsin, Clark Dietz delivers civil, transportation, structural, water and wastewater, and mechanical and electrical engineering services to municipal, state, and private clients. Work spans highway and bridge design, drinking water infrastructure, wastewater treatment plant expansions, stormwater management, site-civil design, and MEP engineering for public facilities. Built on values of commitment, flexibility, honesty, mutual respect, and collaboration, Clark Dietz pursues the mission of engineering quality of life through the built environment.
Great Place to Work Certified (2021)
Chester KochanVice President and Senior Construction Manager
Paul ZouskiSenior Electrical Engineer
Design and construction engineering services for highways, interstates, local roads, and multimodal corridors.
Engineering services for drinking water systems, wastewater treatment facilities, and stormwater infrastructure.
Provides structural analysis and bridge design support for highway and local-road structures.
Analyzes structures for transportation and civil infrastructure projects.
Designs bridge structures for roadway networks.
Inspects bridge structures to support maintenance and rehabilitation decisions.
Develops rehabilitation approaches for existing bridge structures.
MEP engineering for public facilities, water and wastewater plants, schools, and institutional buildings.
Site-civil design, municipal infrastructure planning, and urban revitalization services.
Highways & Roads · Bridges · Transportation · Infrastructure · Government · Wastewater · Water Supply · Stormwater & Flood Control · Utilities · Parks & Open Space · Transit · Industrial · Renewable Energy · Education · Public Safety
Illinois · Bridges
Curved, super-elevated, and skewed up to 58 degrees, this bridge spans 13 active lanes of I-294 and was reconstructed while the corridor below was simultaneously being widened.
Benton Harbor, Michigan · Highways & Roads
Highway corridor engineering encompassing drainage modeling and roadway design.
Evansville, Indiana · Wastewater
Stormwater & Flood Control