Why Does Concrete Sink in Twinsburg and Northeast Ohio?

Twinsburg sits on clay-heavy glacial till soil that expands when it's wet and shrinks when it dries. Ohio's freeze-thaw cycles make it worse — water under the slab freezes, expands, then melts and drains away, leaving empty space behind. Over a few years those voids grow, and the concrete above them settles.

A few spots fail first: the garage apron (it takes the most vehicle weight), anywhere a downspout dumps water near a slab, and low areas where water pools after a storm. Most of Twinsburg's affected concrete was poured in the 1980s and 1990s, so it's had three decades for the clay underneath to erode and shift. It's not bad concrete — it's the ground moving under good concrete.