ST. CHARLES, Mo. (AP) — Authorities say at least 29 vehicles were involved in a pileup during a rainstorm near St. Louis, sending six people to the hospital and bringing traffic to a standstill.

The crash happened around 5 p.m. Sunday on Interstate 70 in St. Charles, shutting down westbound traffic and causing heavy delays for eastbound travelers. According to the Missouri Department of Transportation, westbound lanes reopened shortly after 9 p.m.

Missouri Highway Patrol spokesman Sergeant Al Nothum tells the Post-Dispatch that he didn’t know the severity of people’s injuries. But he says authorities “don’t anticipate anybody dying from this crash.”