Waco police say one other person was injured in the accident Tuesday morning that tied up northbound traffic for nearly two hours.
Investigators say the driver of the 18-wheeler, hauling a tank-like container, was either stopped in the two outside lanes or was backing up when the other vehicles could not brake in time. Eight smaller vehicles and two trucks piled up, but did not hit the original rig.
Texas troopers are investigating whether the driver with the oversize load had violated any traffic laws.
Further details on the injured person weren't immediately released.
