Ehresmann Engineering

Highway Improvement, Inc. is a leading provider of road and bridge maintenance services in Sioux Falls, SD. With over three decades of experience, they specialize in crack sealing, bridge joint installation, crack leveling, and concrete sealing, using advanced techniques and high-quality materials to ensure the longevity and durability of pavements and structures. Recognized nationally for their expertise in pavement preservation, Highway Improvement, Inc. has established itself as a trusted partner for state transportation departments, county governments, municipalities, private businesses, and homeowners. Committed to delivering the highest quality products and services, they continue to innovate and introduce new maintenance procedures to the Upper Midwest Region.Generated from the website

Certified Testing Services, Inc provides geotechnical drilling, geotechnical engineering, construction material testing , aggregate inspections, and soil testing to the Sioux City and Storm Lake, IA areas.

Formed in 1988, GeoTek Engineering & Testing Services Inc. is a professional services firm. Based in Sioux Falls, S.D., it provides consulting services in the areas, including geotechnical engineering, construction materials testing and environmental consulting. The company serves a number of clients across South Dakota, North Dakota, Iowa, Minnesota and Nebraska. It offers a wide range of services, such as subsurface exploration, laboratory testing, as well as earth structures, slopes and retaining systems, among others. GeoTek Engineering & Testing Services Inc. is also one of the leaders in the field of geotechnical engineering.