As the 7th largest engineering firm in the entire St. Louis region, Thouvenot, Wade & Moerchen provides Civil Engineering, Structural Engineering, Land Surveying and Planning services to both public and private sector clients in Illinois, Missouri and throughout the Midwest.

Over more than 70 years we have diversified into five primary disciplines – Structures, Transportation, Land Development, Water / Wastewater, and Surveying.  We draw upon the extensive knowledge, skills and experience of our licensed professionals as well as our support staff, to consistently deliver cost-effective, innovative, and sensible solutions to the design challenges facing our clients.

Our employees know what they are doing – really.  They are passionate about solving your problems, and care deeply about providing exceptional service to you as a client.  Much of our work comes from repeat business built on a solid reputation for being able to get the job done right.  Our clients, in each of those disciplines, will tell you we are their ‘go-to’ firm.