Welcome to Johnson Engineering Company

Johnson Engineering Company (JEC) was founded by brothers Robert and David Johnson in 1956.

Presently under the ownership and control of Daniel and Lucas Johnson, JEC is a civil engineering company that is located in southeast South Dakota.

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Civil Engineering

Civil Engineering

Johnson Engineering Company is focused on providing civil engineering services for its customers with our more than 35 years of professional experience.

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Contact Us

Contact Us

Contact us for any civil engineering services.

We can help you get started by creating a scope of services for your project.

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Johnson Engineering Company

Established in 1956 with a reputation for being responsive and professional in every project, Johnson Engineering Company continues to this day to focus on providing civil engineering services for its customers.

Johnson Engineering Company is proud to serve you with our combined over 35 years of Professional Engineering experience. We currently staff two licensed Professional Engineers, one of which is also a Registered Land Surveyor. We also staff an Engineering Technician and an Office Manager.

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Water Pump Station

Civil Engineering

  • 15th Street Profile
  • Treatment Plant
  • Preliminary project engineering
  • Road design
  • Structure design (bridges and culverts)
  • Bridge and culvert inspections
  • Water distribution design
  • Sewer collection design
  • Sewer and water pump station design
  • Subdivision planning and design
  • Contract administration
  • Construction observation
  • Read more Civil Engineering

Focused on providing civil engineering services for its customers, Johnson Engineering Company continually strives to reach their goals by offering a wide range of professional services.

EST. 1956