A fatal collision involving five big-rig trucks and five other vehicles led to the closure of Highway 99 between Biggs East Highway and Ord Ranch Road. The crash, which took place just after midnight on Saturday and occurred north of Gridley in Butte County, killed at least three people and left two hospitalized.
California Highway Patrol and Cal Fire responded to the scene. The Major Accident Investigation Team came from Sacramento to investigate the incident, according to a tweet by Cal Fire.
Drivers were advised to use alternate routes, as the closures were expected through Saturday afternoon.
CHP advised drivers to be careful of driving in the fog at the time of the accident. Visibility in the Sacramento Valley was low overnight and on Saturday, possibly contributing to the accident.
After Friday’s rain and lingering moisture, periods of clearing throughout the night allowed for evaporation into low clouds and fog. The low clouds caused overcast skies, Karleisa Rogacheski, a meteorologist at the National Weather Service in Sacramento, said.