State Route 99 was closed after an accident Thursday morning in the Corning area. Just before 8AM, a semi truck pulling 2 trailers and another vehicle collided in the area of South Avenue near Corning. A total of 6 vehicles were eventually involved, partially blocking both lanes of the highway. Some injuries were reported, with victims being taken to Enloe Hospital in Chico. The area was reopened to regular traffic about 2 and a half hours later.