sunset over the St. Louis Arch in St. Louis, Missouri

Bridging Visions, Powering Communities in St. Louis

Together, we transform ideas into powerful community impact.

The St. Louis region is focused on building a stronger future. Communities are investing in businesses, services, and people to support growth and opportunity. At the same time, the region is working to modernize aging infrastructure, adapt to evolving regulations, and meet rising demands for renewable power, clean water, reliable sewer systems, high-speed broadband, and efficient transportation. Limited funding and workforce availability add complexity, but they also drive smarter, more efficient approaches to both new construction and maintenance projects.

As a 100% employee-owned professional services firm, we bring a culture of accountability and collaboration to our projects. We specialize in architecture, engineering, environmental and construction services — delivering projects that support the communities where we live and work. We provide a range of local technical expertise and project management to address infrastructure challenges. Backed by a strong network and a focused approach, we bring together the right people and experience to support diverse project needs and help communities move forward.

We Celebrate These Numbers
No. 6
Top Design Firms, Engineering News-Record
No. 4
Top Architecture Firms, Architectural Record
No. 6
Largest Employee-Owned Firms in the U.S.
45+
Employees in St. Louis
30+
Years in St. Louis
Discover Your Possibilities

At HDR, collaboration drives our culture. Join a firm where every voice matters, mutual respect fuels creativity, and teamwork fosters an environment where employees stay, grow and thrive.

Other Local Projects

  • Ameren Long-Range Transmission Program | Central Illinois
  • Chester Bridge Replacement | Perryville, Missouri
  • Gateway Greenlight Implementation | St. Charles County, Missouri
  • I-55 Pavement Improvement Construction Services | Jefferson County, Missouri
  • Incinerator Site Redevelopment | St. Louis, Missouri
  • Union-Lindell Bridge Replacement | St. Louis, Missouri
  • Water Master Plan | St. Louis, Missouri
Ameren power lines

Our Local Experts

Kevin Kriete, HDR Senior Transportation Project Manager in St. Louis, Missouri
Senior Transportation Project Manager
David Bunch, HDR Area Water Manager in St. Louis, Missouri
Area Water Manager
Michael Bell, HDR Environmental Section Manager in St. Louis, Missouri
Environmental Section Manager
Jessica Hochlan, HDR Strategic Communication Section Manager in St. Louis, Missouri
Strategic Communications Manager
Greg Kuntz, HDR Transportation Professional Services Leader in St. Louis, Missouri
Transportation Professional Services Leader
Erin Jearls, HDR Sanitary Engineer in St. Louis, Missouri
Sanitary Engineer
Andrew Horstman, HDR Field Services Manager in St. Louis, Missouri
Field Services Manager

HDR in Missouri

401 South 18th Street 
Suite 300 
St. Louis, MO 63103-2296

10450 Holmes Road
Suite 600
Kansas City, MO 64131-3471

2144 East Republic Road
Suite B203
Springfield, MO  65804-4663

3610 Buttonwood Drive
Suite 200
Columbia, MO 65201-3721

187 East David
PO Box 969
Forsyth, MO 65653-0969