Contact Us

SDDOT Project Manager
Pete Longman, P.E.
5316 West 60th Street North
Sioux Falls, SD  57107

HR Green Project Manager
Kevin Brehm, PE, SE
520 Maryville Centre Drive
Suite #100
St. Louis, MO  63141

HR Green, Inc., (HR Green) is a multi-discipline professional services and construction firm offering planning, technical consulting, engineering, environmental services, and construction to clients in diverse markets. One of America’s longest operating design and construction firms, HR Green enjoys a longstanding reputation for environmental stewardship, public service and technical excellence.  The firm is consistently ranked among ENR’s Top 500 Design Firms in the United States. Founded in Cedar Rapids, Iowa in 1913, the firm now employs over 600 people in Missouri, California, Illinois, Iowa, Minnesota, Pennsylvania, South Dakota, Colorado, Arizona, and Texas.