A semi-truck overturned on its side Friday afternoon after its cargo container struck the Washington Street viaduct. Sgt. Bryan Bryant of the Tiffin Police Department said Clifford P. Lilly, 39, of Cleveland, had been trying to go under the viaduct when the cargo container struck the viaduct and turned the truck on its side. Lilly, who was not injured, was cited with failure to follow a truck route. The accident closed a portion of Washington Street for about an hour and a half, Bryant said. Bryant said the viaduct was not damaged.