Our construction companies provide products and services that support America's infrastructure.
Knife River Corporation offers integrated construction and specialty services to support its aggregate-based product lines. Products from Knife River’s companies have helped build U.S. military installations, interstate highways and major sports and business facilities.
MDU Construction Services Group provides services essential to energy infrastructure networks, including electrical and mechanical services and connectivity. Its companies have installed electrical wiring and fire suppression systems in some of the largest casinos in Las Vegas, as well as major sports arenas and industrial facilities around the country.