A chemical spill on Highway 99 in Stanislaus County has prompted all northbound lanes to be shut down.
CHP said a big rig was traveling south on the California freeway near Hatch Road about 7:30 a.m. when it struck the back of a small truck.
That crash caused the truck to end up on the northbound side where it spilled 41 one-gallon jugs of muriatic acid onto the roadway.
Traffic is being diverted off the highway at Hatch Road, Whitmore Avenue, Mitchell Road and Fourth Street.
The roadway is expected to reopen at 2 p.m.
No one was hurt in the crash.
Muriatic acid is one of the names for hydrochloric acid. It is also known as spirits of salt or acidum salis. “Muriatic” means “pertaining to brine or salt”.