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Corporate Office

70 Thomas Johnson Drive, Suite 200
Frederick, MD 21702  Directions

301-663-0626 (phone)

301-695-0426 (fax)

East Region Office

201 International Circle, Suite 150
Hunt Valley, MD 21030  Directions

410-290-1011 (phone)

410-290-1022 (fax)

Bob Rininger

After more than 50 years in the construction industry, mostly spent in commercial concrete, Bob Rininger will be retiring at the end of 2019. Bob has been General Manager of MK Concrete Construction since 1997, and has been a member of Morgan-Keller’s Executive Team as Vice President for the last 20 years. Bob has served in numerous leadership positions on Committees and Boards at the local and national level within MRMCA, ACI, ASCC, and other associations.

“The time I have spent with MK Concrete Construction has been amazing,” said Bob. “I have been fortunate to have worked with so many outstanding people and to have had the support of our company owners to create a company that is recognized as one of the best in our working area of MD, PA, WV, and VA.” 

Upon Bob’s retirement, Chuck Brandenburg will become the new General Manager of MK Concrete Construction.  With 25 years of concrete construction experience, Chuck’s resume includes positions as Project Manager, Senior Project Manager, and General Concrete Operations Manager.

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