Child killed in Johnson County crash near Gardner Copyright 2021 Scripps Media, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed. File/KSHB and last updated 2021-04-12 13:51:19-04 KANSAS CITY, Mo. â One person was killed in a crash in Johnson County Monday morning. The Johnson County Sheriff's Office said the crash happened around 8 a.m. near 175th Street and Four Corners Road west of Gardner. According to the sheriff's office, a maroon SUV was headed north on Four Corners Road when it was hit by a roofing truck. The impact pushed the SUV into a truck and a van.