Interstate Engineering announced today that it acquired TerraSite Design, a civil engineering, landscape architecture, and planning company located in Rapid City, South Dakota. This acquisition represents a key step in Interstate Engineering’s strategic growth across South Dakota, building upon its established office in Spearfish.
Lonni Fleck, Interstate Engineering CEO, said, “After 49 years of business, I’m grateful for our hard-working and dedicated employee owners who enthusiastically serve our clients every day. This acquisition fits perfectly with our strategy of focusing on the South Dakota market in the Great Plains region. Rapid City is one of the fastest-growing cities in the Midwest, and with this growth, there will be a continued need for civil engineering, traffic engineering, surveying, planning, and other professional services. I am particularly thrilled as this acquisition brings talented landscape architects who enrich our communities, enhancing well-being and environmental stewardship.”
“TerraSite Design is exactly the kind of partner we want on our growth journey, bringing a strong business, trustworthy people, and a track record of repeat clients. I’m pleased to welcome Shane Matt, PE, and Eirik Heikes, PLA, along with their entire TerraSite Design team, to Interstate Engineering,” says Lonni Fleck.
TerraSite Design co-owners Shane Matt, PE, and Eirik Heikes, PLA, shared their excitement for the acquisition. “Joining the Interstate Engineering Team means access to incredible resources, expertise, and opportunities for collaboration with talented colleagues that will allow us to provide our clients with great solutions”, said Shane Matt. In addition, Eirik Heikes shared, “I’m excited for what this means for our team in terms of regional opportunities for collaboration with our landscape architects and theirs to grow Interstate Engineering’s offerings further.”
Interstate Engineering has built its business on strong relationships and a culture of integrity, helping others, loyalty, and a strong work ethic. Together, we will continue to offer even more resources and opportunities to clients in the Black Hills.
The office is located at 1635 Deadwood Ave, Rapid City, SD and be reached at (605) 791.1736.
About TerraSite Design
TerraSite Design serves the Black Hills region in civil engineering, landscape architecture, and planning. Founded in 2018, TerraSite Design has established itself as a professional team creating inspiring, sustainable, award-winning designs for downtown plazas, land development, federal projects, parks, memorials, and cemeteries. They share a similar culture of client focus, integrity, and helping others.
About Interstate Engineering:
Interstate Engineering is a civil engineering, surveying, and planning firm headquartered in Jamestown, North Dakota. With over 170 professionals on staff, Interstate Engineering serves municipal, county, state, and tribal governments as well as private individuals and corporations. Incorporated in 1976, Interstate Engineering has been part of North Dakota, Minnesota, Montana, South Dakota, and Wyoming for over 45 years.