Overview

• The collision was reported around 2:15 p.m. just south of the Alpine Road exit on southbound I-280, according to the CHP.
• The San Mateo County Sheriff's Office said several lanes will remain closed for hours and urged motorists to use alternate routes.
• Investigators have not released details on how many vehicles were involved, whether there were injuries, or the cause of the crash.
• SKY7 aerial video showed a California Highway Patrol motorcycle tipped over, and officials have not confirmed its involvement.
• Traffic delays were expected to extend into the evening as cleanup and the investigation continued.