A series of wrecks on Interstate 44 in Southwest Missouri on Saturday has left 22 people hurt and tied up traffic for almost four hours. It started with a two-vehicle accident. Traffic was stopped, and about half an hour later another series of crashes happened, one involving six vehicles that injured seven people; then another crash ten minutes later that involved six more vehicles and injured 11 more. Then, twenty minutes or so after that, another crash that involved one vehicle slowing down for all of the mess ahead getting rear-ended. Five of the injuries are described as serious. The others were minor to moderate.