A chain reaction accident near Festus sent a Bonne Terre man to the hospital yesterday morning. The Highway Patrol reports that a GMC Sierra driven by 52-year-old Michael Smith of DeSoto was traveling northbound on I-55 near Highway A when he failed to brake due to traffic congestion, and he struck the right side of a vehicle driven by 18-year-old Savannah Hassmeyer of Bonne Terre, she, in turn, struck the vehicle in front of her, which struck the vehicle in front, and so on. In all, 5 vehicles were involved in the accident. Hassmeyers’ passenger, 44-year-old Andrew Hassmeyer, also of Bonne Terre, was taken to Mercy Hospital South with moderate injuries. The accident happened at 11:30 on Sunday morning.