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The No. 2 and 3 lanes of the highway near Manuel Campos Parkway were blocked until around 3:30 p.m., according to the CHP.
The CHP says a Caltrans van with a trailer was on the right shoulder with five Caltrans employees, picking up trash and doing regular maintenance. A Ford pickup truck in the slow lane veered into the shoulder, crashing into the back of the Caltrans vehicle.
One Caltrans worker suffered serious injuries and two others suffered minor injuries, a CHP officer said.
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The truck driver had minor injuries and was transported to a local hospital. The CHP suspects the driver of the truck was distracted. They don't believe the driver was impaired, but the accident is still under investigation.
The 11:30 a.m. collision happened in the same area where a CHP officer and a Vallejo man were killed when a vehicle struck them on the right shoulder of the highway on Aug. 10.
Before you head out to your car, be sure to check out the ABC7 traffic maps for real-time information to help you navigate through traffic jams.