Houston TranStar shows the incident was reported at about 5:16 a.m. along I-69 northbound at FM-360/Spur 540 in Fort Bend County, resulting in heavy delays for early morning commuters.
SkyEye flew over as crews worked to clean up the crash, which was cleared at about 9:40 a.m., according to TranStar.
Police said the driver of the mixer was taken to the hospital with a head injury.
It's unclear at this point what led the truck to overturn.
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