PLATTE COUNTY — A St. Joseph woman died in an accident just after 9 p.m. Wednesday in Platte County.

The Missouri State Highway Patrol reported a 2013 Peterbilt semi driven by Carl E. Doty, Jr, 71, Missouri Valley, IA., crossed the median from southbound to northbound lanes of Interstate 29 at Route HH. As the driver attempted to make a U-turn to travel back northbound, a 2004 Cadillac driven by Herbert D. Humphrey, 67, St. Joseph, rear-ended the semi.

A passenger in the Cadillac, Cynthia J. Humphrey, 66, St. Joseph, was transported to Mosaic Life Care where she was pronounced dead at 10:43 p.m.

EMS transported Herbert Humphrey to Mosaic in serious condition, according to the MSHP. Doty was not injured. All three were properly restrained at the time of the accident, according to the MSHP.