BERKELEY (CBS SF) — An injury accident involving two overturned vehicles on westbound I-80 in Berkeley blocked lanes of traffic for almost an hour Thursday evening, according to authorities.

At around 6:11 p.m., CHP issued a severe traffic alert following a collision with injuries on westbound I-80 west of Gilman Street. The left and center lanes are blocked.

READ MORE: Emergency Crews at Scene of Major Accident on Vasco Road in Byron; All Lanes Blocked

The KCBS Traffic Twitter account posted an image from Caltrans cameras showing the scene. Two overturned vehicles were visible in the photo.

READ MORE: North Bay Man's Beloved Cat Allegedly Taken by Airbnb Renters

By about 7 p.m., authorities said the accident was cleared and all lanes had reopened.

MORE NEWS: 49ers Faithful Stream Toward SoCal for NFC Championship Game

Motorists are advised to expect residual delays and to use alternate routes to avoid the area.