Henningson, Durham & Richardson

HDR, Inc. is an architectural, engineering and consulting firm based in Omaha, Nebraska, USA. HDR has worked on projects in all 50 U.S. states and 60 countries, including notable projects such as the Hoover Dam Bypass, Fort Belvoir Community Hospital, and the The Roslin Institute building. The firm employs 8,500 professionals representing hundreds of disciplines in the architecture, energy, federal, water resources, environmental, mining, private land development, resource management, transportation and water markets.