It happened around 1 a.m. Wednesday on the westbound lanes near Mercury in northeast Houston.
Houston police say the 18-wheeler's lost load fell onto another vehicle, but that driver suffered only minor pain.
The 18-wheeler driver, who was with his wife, told ABC13 it was dark, but the cow was already there. He and his wife were not hurt.
It took several hours to remove the several hundred pound cow as well as all the pieces of wood.
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