‘Major traffic jam’ on Highway 12 after Sacramento County multiple-vehicle crash in Delta

A crash involving multiple vehicles has blocked both lanes on Highway 12 in the Delta and created a “major traffic jam” in southwest Sacramento County, authorities said.

The crash, involving at least one big rig with a trailer hauling vehicles, was first reported about 2:15 p.m. on Highway 12 at Jackson Slough Road, according to the California Highway Patrol traffic incident information page.

The big rig reportedly collided with several other vehicles before going down an embankment at the crash site just south of Isleton.

The CHP South Sacramento Area Office said Highway 12 was blocked in both directions due to the crash involving a vehicle hauler. The crash involved seven vehicles, including the big-rig, said Officer Mark Leavitt, a spokesman for the CHP South Sacramento office.

Leavitt said one person suffered major injuries and was flown by helicopter to a hospital. He said there were other people who suffered moderate to minor injuries and taken by ambulances to hospitals.

About 3:15 p.m., Caltrans officials announced on social media that the crash has created a “major traffic jam” from Rio Vista to east of the Mokelumne River. Traffic was backing up to just south of the Highway 12 and Highway 160 junction. Caltrans said drivers should “expect long delays” and should use alternate routes.

About 5:15 p.m., the CHP reported that eastbound lane was open, but the westbound lane remained closed.