Welcome, TerraSite Design, to the Interstate Engineering Team!

News That Matters, Insights That Inspire.

Stay up to date on the projects we’re building and the people making it happen.

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Our news section shares stories that matter. From heartfelt employee highlights and company milestones to community involvement and the latest in geospatial innovations, we are proud to spotlight the people and projects that strengthen the communities we serve, keeping you informed and inspired.

Hatting Named 40 Under 40 Recipient

Spearfish Office being InterActive – Winter Wonderland

Mandan Office being InterActive

Spearfish Office being InterActive – Treats Main Streets

Team of people standing together

Interstate Engineering Acquires TerraSite Design

Alexandria Office Takes Part in Heavy Equipment Class

Bedwell Earns PE

Lindbloom Earns PE

Mayer Named 20 Under 40 Recipient

Kronbeck Earns Professional Landscape Architect License

Fisketjon Earns International Residential Code License

Strike Earns FAA Part 107

Monke Earns PE

Ashley Weightman Receives 40 under 40 Award

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Blogs Coming Soon

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Innovative & Forward-Looking

Schirrick Achieves North Dakota Professional Engineer License

Headshot of Lonni Fleck wearing a black blazer

Lonni Fleck Interstate Engineering’s New CEO

Hastings Achieves North Dakota Professional Land Surveyor License

Sidney Office Puts on Burgers in the Park

Founder being InterActive

Buffalo Office Being InterActive

Spearfish Office being InterActive

Lemmel Braving to be InterActive

Alexandria Team InterActive in Community

Hournbuckle Earns Friend of Rural Water Award

Interstate Engineering Announces Acquisition of 49th Latitude Land Survey

Interstate Engineering Acquires Landteam Inc.