Business Details
43 Years
experience
Your Trusted Source for Aggregates and Concrete in Missouri
Con-Agg Companies has established itself as a trusted provider of construction materials and warehousing solutions across Missouri. With over 50 quarry and ready mix locations, we serve residential, commercial, and government clients through our aggregates, concrete, and underground storage services. Our commitment to safety excellence is evidenced by 22 consecutive years without lost-time accidents and industry recognition from the Missouri Limestone Producers Association. Headquartered in Columbia, Missouri, our team of 200 dedicated professionals delivers materials that support local infrastructure while maintaining strict environmental stewardship.We combine operational expertise with personalized service to meet diverse project requirements, from small residential driveways to large-scale transportation initiatives. Our specialized offerings include MODOT-compliant base products, precision concrete mixes, and secure underground warehousing facilities. Through continuous process improvement and employee training programs, we maintain industry-leading safety standards while ensuring reliable delivery of high-quality construction materials.
Services
Aggregates Supply
Ready Mix Concrete
Underground Warehousing
Safety Training Programs
Environmental Services
Details
- Year established: 1983
Highlights and features
- 50+ strategic locations across Missouri for reliable material delivery
- 22 consecutive years with no lost-time accidents demonstrates safety leadership
- 200 dedicated professionals with specialized construction materials expertise
- Environmental stewardship in limestone extraction and processing operations
- MODOT-certified products meeting strict transportation infrastructure requirements
Services
Aggregates Supply
We provide a comprehensive range of crushed limestone products meeting MODOT specifications. Our aggregates include base materials, clean rock, road rock, and rip rap for construction projects. Certified to supply US Army Corps of Engineers requirements, we offer precise material solutions for infrastructure development.
Ready Mix Concrete
Our ready mix operations deliver precision concrete blends from 3000 psi to 5000 psi strength specifications. Available in Columbia and Moberly locations, we supply mixes tailored for residential foundations, commercial parking lots, and high-strength structural applications with consistent quality control.
Underground Warehousing
Subtera Underground Warehousing offers climate-controlled storage in a secure, manmade underground facility near I-70. Features include 20ft ceilings, dock doors, and advanced security systems for protecting valuable inventory and records in a stable environment.
Safety Training Programs
We implement comprehensive safety protocols including MSHA/OSHA compliance, risk assessment, and equipment operation training. Our zero-incident culture has earned industry recognition through multiple safety awards and sustained accident-free operations.
Environmental Services
Our operations integrate environmental stewardship through responsible quarrying methods and land reclamation programs. We maintain strict compliance with regulatory requirements while minimizing ecological impact through sustainable resource management practices.
People
Garth Adkins
Director of Health and Safety
Garth Adkins leads Con-Agg's safety initiatives with over 25 years of experience in industrial safety management. He oversees implementation of comprehensive safety programs that have maintained 22 consecutive years without lost-time accidents.
Questions
What construction materials do you supply?
We provide crushed limestone aggregates, ready mix concrete, and underground storage solutions. Our products include MODOT-certified base materials, various concrete strength grades, and secure warehousing facilities.
Do you serve residential customers?
Yes, we supply materials for residential projects including driveway rock, concrete mixes for foundations, and landscaping aggregates. Our locations support both small-scale and large commercial applications.
Are your products certified for government projects?
Many locations are certified to supply materials meeting US Army Corps of Engineers and MODOT specifications for transportation infrastructure and public works projects.
What safety measures do you implement?
We maintain rigorous safety protocols including MSHA/OSHA compliance, equipment safety programs, and employee training. Our 22-year accident-free record demonstrates our zero-incident safety culture.
Where are your facilities located?
We operate 50+ locations across Central and Northwest Missouri, with aggregates operations in Columbia, Jefferson City, Sedalia, and Moberly, plus underground warehousing near I-70.
How can I request a quote?
Contact our Columbia headquarters at (573) 446-0905 or use our website's location finder to connect with the nearest facility for pricing and ordering assistance.
