Copperopolis, CA…On June 17th a 59 year old Ceres man was driving a 2000 Kenworth when it overturned on Obyrnes Ferry. While traveling northbound on Obyrnes Ferry Rd, just north of the Tuolumne County line the driver of a tractor truck pulling two bottom dump trailers allowed the vehicle’s wheels to drift off of the right side of the roadway and onto the dirt shoulder. The second trailer began to rock in a side to side motion before completely breaking free from the first trailer. The separated trailer then rolled onto its side, partially spilling its load in the roadway.