At this point, it’s not clear if there were any injuries or what led to the wreck.
HOUSTON — A big crash involving four cars had several lanes of the Katy Freeway closed off. The crash was at Mason Road.
Houston TranStar says a crash involving a heavy truck was verified at 4:23 p.m. It was cleared at about 5:30 p.m.
Traffic was clearing up but it may take some time due to rush hour.
Below is a live Houston-area traffic map