Our history
From 1929 to today — milestones from a family-operated Illinois concrete business.
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1929 — Coal City Trucking is founded
The Dearth family founds Coal City Trucking in Grundy County, Illinois — the first of the family-owned operations that grow into today’s family of companies.
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1952 — Coal City Redi-Mix is formed
The Dearth family expands into ready-mix concrete with Coal City Redi-Mix. This is the start of the redi-mix lineage that runs through today — when we say “Family-operated since 1952,” this is the year.
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1985 — Grundy Redi-Mix is formed
Grundy Redi-Mix is established with the Morris plant as its headquarters. Coal City Redi-Mix is later absorbed into Grundy operations, with the original Coal City plant continuing to dispatch under the Grundy name.
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2004 — River Redi-Mix is formed
The family expands with the formation of River Redi-Mix, anchored by the purchase of the Marseilles plant on the Illinois River. The Ottawa, Triumph, and Peru plants added in subsequent years are part of the River side of the operation.
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2019 — Plano plant joins the network
The Plano plant comes online, expanding our redi-mix network into Kendall County.
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2022 — Oswego plant joins the network
Oswego plant added — further reach into Kendall County for residential and commercial work.
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2023 — Partnership with VCNA
To extend our supply capabilities and continue investing in our plants, Grundy County Redi-Mix and River Redi-Mix entered a partnership with VCNA — Votorantim Cimentos North America, one of the largest cement and ready-mix producers in North America. Family operations continue under the same leadership.
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2024 — Elburn plant joins the network
Elburn plant added, extending coverage into Kane County.
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2025 — Ottawa and Triumph plants come online
Two new plants come online on the River side: Ottawa and Triumph — broadening the network’s reach to the west.
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2026 — Peru plant joins the network
The Peru plant is added on the River side — the latest expansion of our redi-mix network.