Local News

Both directions of 91 Freeway in Riverside closed for hazmat situation involving truck fire

By Chelsea Hylton

Updated on: March 12, 2026 / 12:24 PM PDT / CBS LA

CBS News Los Angeles

A truck fire has prompted the full closure of the east and westbound 91 Freeway in Riverside on Thursday morning.

The California Highway Patrol has issued a Sig Alert for the hazmat situation for both directions of the freeway at Adams Street. Authorities said the closure will remain for the next two hours.

The CHP said propane can be smelled in the area and there is a "high explosion probability."

Details of the crash are unknown.

This is a developing story. Check back for updates.

Chelsea Hylton

Chelsea Hylton is a web producer for CBS Los Angeles. An Inglewood native, Hylton has her master's degree from USC. She covers local breaking news across the Southern California region. Before joining CBS in 2024, she worked at NBC LA, Telemundo 52, The Los Angeles Times and KOMO 4 News in Seattle.