Founded in 1976, Interstate Engineering provides innovative engineering, surveying, and planning solutions throughout the Black Hills Region. We specialize in sustainable, high-performance civil engineering, surveying, and planning services. Whether a rural community, growing urban area, established water resource district, expanding tribal community, or private developer, our team strives to be the professionals you need, the people you trust. The Interstate Engineering team includes original thinkers in civil, structural, land surveying, funding, hydrology, and planning. Our goal is to plan, design, and construct with our clients in mind, offering project solutions with greater efficiency, durability, and usability.