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Clark Dietz

Clark Dietz is an employee-owned, top ranked engineering consulting firm providing comprehensive infrastructure solutions to municipal, government, corporate and industrial clients throughout Illinois, Indiana, Kentucky, and Wisconsin. With an unwavering commitment to our clients, we listen intently to understand their unique objectives. We respond with innovative, sustainable, and fiscally responsible solutions that support the community’s best interests, short and long term. Considering all aspects of project success, we foster collaboration with community stakeholders, provide funding assistance, and design to achieve the utmost in client satisfaction.

Primary areas of engineering include transportation, civil, environmental, electrical, mechanical, structural, and construction management. Areas of specialization include: water/wastewater/stormwater management, traffic engineering and roadway design, LED lighting, geographic information systems (GIS) management, renewable energy solutions, HVAC, and supervisory control and data acquisition (SCADA) systems.

Contact Information:

Sean M. Widener, P.E., PTOE
125 West Church
Champaign, IL   61820
Phone:  217-373-8947
Fax:  217-373-8923

Michael J. Livermore
125 West Church
Champaign, IL   61820
Phone:  217-373-8927



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