The Brief An 18-wheeler went off the side of I-10 Katy Freeway after being involved in a crash with another 18-wheeler. Harris County officials say two occupants were taken to the hospital with minor injuries. An 18-wheeler has caused a portion of the Katy Freeway in the west of the Houston-area to shut down after it appeared to have fallen off the roadway. Houston Transtar is reporting I-10 Katy eastbound at Highway 99 Lanier Parkway has been shut down due to an accident involving a heavy truck. Two occupants were taken to the hospital with minor injuries, officials said.