LIBERAL, Mo. — Four Columbus residents were injured, one seriously, in a crash Monday night in Barton County, Missouri, according to the Missouri State Highway Patrol. 47-year-old Clay Thixton of Columbus was traveling northbound on Route 43 about four miles south of Liberal, Missouri, when the 2002 Chevy Blazer he was driving ran off the roadway and overturned shortly before 11:30 p.m., according to the MSHP crash report.