Engineering, Architecture, Planning

TKDA is a full-service engineering, architectural and planning firm headquartered in Saint Paul Minnesota.

Our Offices:

  • Saint Paul, MN (headquarters)
  • Duluth, MN
  • Hermantown, MN
  • Irvine, CA
  • Chicago, IL
  • Tampa, FL
  • Seattle, WA

We're 100% employee owned. And our more than 200 employees are passionate about achieving the highest levels of engineering, architecture and planning excellence.

Our Employees:

  • Number of employees: 225+
  • Registered engineers: 80
  • Registered architects: 18
  • LEED accredited staff: 22

Loyal customers come back to us for their next project…and the next. They tell us they appreciate being able to access integrated services from a single source. And they rely on our experience and expertise in their industry.

Markets Served:

  • Architecture
  • Government
  • Transportation
  • Energy Solutions
  • Water

We've had more than 100 years experience bringing the right people to the job.

Management Team:

  • William E. Deitner, PE, SE
    President & CEO
  • Kevin R. Cullen, PE
    VP, Surface Transportation
  • John W. Ahern, PE
    VP, Aviation
  • Dennis M. Postler, PE
    VP, Municipal Services
  • Thomas S. Stoneburner, PE, SE, LEED AP
    VP, Facilities Engineering
  • Dean A. Johnson, AIA
    VP, Architecture
  • Bret M. Farmer, PE
    VP, Rail
  • Greg Barlow, SPHR
    VP, Human Resources
  • Leslee LeRoux
    VP, Marketing/Business Development
  • Dean Gratz
    VP, Finance