A multi-vehicle multi-wreck accident closed Georgia Highway 20 S southbound and northbound, just north of Honey Creek Road, Thursday evening. The crashes involved serious injury and a medical helicopter was called in. All traffic southbound and northbound is being diverted. Traffic is backed up near St. Pius X Catholic Church and Epiphany Lutheran Church. Drivers are asked to avoid the area for several hours. Check back later for details on this developing story.