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A Foundation of Trust

For nearly five decades, Koehler Engineering & Land Surveying has been Cape Girardeau County’s oldest engineering and surveying firm. Now, as a unified firm, we bring Koehler’s deep local roots and 37,000+ completed projects into Klingner’s 120-year legacy to bring expanded engineering, architecture, and planning services to the area.

This partnership keeps local projects in the hands of the same trusted team, now supported by 150 employees across the Midwest.

Koehler Engineering A Division of Klingner & Associates, P.C. Chris Koehler and Mike Klingner signing paperworkThe Klingner executive team with the Koehler employees in front of the office
United by Our Commitment to Clients
Mike Klingner

“Our firms are a great fit with the type of services and client service culture.

Many of our clients from 1905 are still with the firm, just as many of Koehler’s clients have stayed with them over the years.”

Mike Klingner, PE
President

Meet The Local Leadership

Cullan Duke, PLA

Cape Girardeau Regional Office Manager
With 32 years of experience at Klingner, Cullan is a Landscape Architect with a diverse background in mixed-use, parks and recreation, and industrial design. As the office manager, he is excited to return to his Southeast Missouri roots to expand Klingner’s fully integrated design capabilities in the region.

Chris Koehler, Professional Staff / Partner

Regional Client Manager
Chris was a part of Koehler since its founding nearly 50 years ago. His continued presence, alongside the professional staff and support team, will make sure community commitment and local relationships remain the foundation of our work.

READ THE FULL STORY

Men working with rebar on a construction site in 1949

A Legacy of Quality

For 120 years, Klingner has combined proactive management with client-centered design to tackle complex challenges for Midwestern communities. Our multidisciplinary approach—integrating architecture, engineering, and field services—allows us to deliver full lifecycle support for facilities and infrastructure. Thousands of organizations, from municipalities and school districts to industrial giants and state agencies like the State of Missouri and the Missouri Department of Transportation, trust Klingner to deliver award-winning solutions. Learn more about who we are >

Designs That Change Communities

Explore a cross-section of the work that defines our legacy of quality, recognized by organizations such as the American Consulting Engineers Council (ACEC) and the American Society of Civil Engineers (ASCE).

SEE MORE OF OUR WORK

A black car about to drive over a bridge next to a river

We’re a True Partner for Your Project

You’re building the future. Let’s talk about your project and see how we can partner to can make it a success.

Talk to us about your project