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About Us

The Illinois Ready Mixed Concrete Association (IRMCA) is a non-profit trade organization that represents Illinois ready mix producers, suppliers and contractors. As an organization, our purpose is to achieve common goals such as education & training, promotion and advocacy that cannot be met individually. IRMCA strives to be the voice of the ready mix industry in Illinois and ceaselessly promote the increased use of high quality, durable concrete.


Jim Randolph, Executive Director

Theron Tobolski,  Assistant Executive Director

JoAnn McKeown, Office Manager

303 Landmark Drive, Suite 1-A

Normal, Illinois 61761 


PH: 309.862.2144

TOLL FREE: 800.235.4055

FX: 309.862.3404

Board of Directors and IRMCA Staff

Mr. Ryan Cialdella


Ozinga Brothers, Inc.
18825 S. Old LaGrange Road
Mokena, IL 60448

Mr. Brandon Thetard

Vice President

River Redi-Mix
2195 East Bluff Road
Marseilles, IL 61341

Mr. A.J. Bimrose


United Contractors Midwest
PO Box 166
Tremont, IL 61568




Mr. David Barnes


BASF - Master Builders Solutions
4137 Diana Drive

Imperial, MO 63052

Mr. Jim Posdany


Continental Cement
16100 Swinglet Ridge Road
Suite 230
Chesterfield, MO 63017

Mr. Jim Amundsen


GCP Applied Technologies
1103 W Nassau Drive
Peoria, IL 61615

Mr. Timothy Burke


Boral Resources
4043 North Euclid Avenue
Bay City, MI 48706

Mr. Scott Maberry


Kienstra- Illinois
201 West Ferguson Avenue
Wood River, IL 62095

Mr. Matt Meyer


Mid- Illinois Concrete, Inc.
P. O. Box 785
Effingham, IL 62401

Mr. Kent Hustedde


Quad- County Ready Mix
300 Old Fullerton Rd.
Swansea, IL 62226

Ms. Cheryl Moeller


Moeller Ready Mix
300 Moeller Road
Jacksonville, IL 62650

Mr. Tim Huiner


VCNA Prairie Material
7601 West 79th Street
Bridgeview, IL 60455

Mr. Mike Boyda


Vulcan Materials Company
1000 East Warrenville Road
Suite 100
Naperville, IL 60563- 1444

Mr. Mike DeJong


Welsch Ready Mix, Inc.
4243 W. 166th St.
Oak Forest, IL 60452

Mr. Jamie Maley


Capitol Ready-Mix

1900 E. Mason, PO Box 6246

Springfield, IL 62708