A collision involving a big rig, a garbage truck and a two-passenger car is blocking one lane of U.S. Highway 101 in San Francisco this morning, according to the California Highway Patrol.

The vehicles crashed around 6:15 a.m. and have left the westbound No. 4 lane blocked just south of Third Street, CHP Officer Chris Nave said.

The driver of the big rig appears to be badly injured, Nave said.

Get the latest traffic updateat www.511.org.

— Examiner staff and Bay City News contributed to this report