All lanes of the westbound 210 Freeway in Pasadena reopened Tuesday afternoon after a collision involving a big rig had blocked all lanes, authorities said.
Shortly after 2:30 p.m., the big rig and about five other vehicles were involved in a collision on the freeway just west of Hill Avenue, the California Highway Patrol said.
Traffic was diverted off at the Lake Avenue exit, the CHP said. All lanes fully reopened by 4:45 p.m., the CHP said.
Four people suffered moderate injuries in the collision, according to the Pasadena Fire Department.
This story will be updated as more information becomes available.