G.A. Johnson Construction, Inc. is located in Harrisburg, South Dakota. With over 100 years combined experience in the construction industry, we know and have acquired a strong working relationship with the area suppliers, contractors, and subcontractors. Our staff has managed a wealth of construction projects ranging from small renovations to large multi-million dollar facilities within the Midwest area. 

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Corey Johnson (President)

Graduated with a Bachelor of Science degree in Construction Management, helped launch G.A. Johnson Construction with his dad and brother, promoted to president in 2007, active in AGC and HBA of the Sioux Empire, licensed Real Estate Broker in the state of South Dakota

Hobbies: enjoys spending time with his wife and two children, hunting, archery, fishing, snowmobiling, racquetball and occasionally a round of golf



Jerry Johnson (CEO)

26+ years managing a top 500 Architectural, Engineering and Construction firm where he was President and CEO of the construction division before retiring and starting up G.A. Johnson Construction in 2002 with his sons, actively involved in AGC of SD

Hobbies: golfing, hunting, fishing, playing guitar, flying model airplanes, spending time with family

“Careful, now you’re talking common sense”


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Michael Johnson (Secretary/Treasurer)

Bachelor of Science degree in Business Economics, specializes in EFIS finishes, builds custom executive homes, active member in HBA of the Sioux Empire and AGC of SD

Hobbies: enjoys quality time with his family, hunting, fishing, golfing, trap shooting and snowmobiling. 


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Matt Johnson (Project Manager/Estimator)

AAS degree in Building Construction, 20 years experience in commercial, residential and agricultural construction,

Hobbies: enjoys spending quality time with his family, camping, and snowboarding.

“Each morning we are born again. What we do today is what matters most.” Buddha


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Colette Krisher (Accountant)

Grew up as a farm girl in rural Iowa, loved animals and her pet pig Arnold, credits having learned a good work ethic from the farm

Hobbies: enjoys spending time with her husband, researching genealogy, traveling, horseback riding, and attending rodeos

“Do unto others as you would want them to do unto you.” Matthew 7:12



Clarissa Roemen (Marketing)

Grew up doing many art-related programs – piano, flute, singing, drawing, painting - all while still being a farm girl, graduated from STI in graphic communications, 15+ years’ experience in design/marketing

Hobbies: reading, baking with my kids, and grilling with family by the pool

“Be you, because no one else can.”


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James (J.R.) Hicks (Superintendent)


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Mark Rave (Superintendent)

30+ years’ experience in hands-on construction, has managed many multi-million dollar projects as well as smaller projects, has been with GA Johnson since the year they started, veteran of the United State Air Force, volunteer for the Trent Fire Department

Hobbies: enjoys spending quality time with his wife, Ruth, hobby farming, gardening, attending auctions, and being with their children and grandchildren

“Either you run the day, or the day runs you” Jim Rohn


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Rodney Rich (Superintendent)

20+ years’ experience in hands-on construction, United States Army Veteran, Emergency First Responder, Scuba Diving instructor, Bi-lingual

Hobbies: scuba diving, fishing, golfing and spending time with family and friends

“Life is 10% what happens to you and 90% how you react to it.” Charles R. Swindoll



In Memory - Timothy Schultz

We dedicate 2020 to Tim. He was such a huge part of the G.A. Johnson Construction family and losing him leaves a big hole in our hearts. As Tim’s saying was “Been there; done that”, let’s live 2020 to it’s fullest.