HAYWARD -- The westbound side of the San Mateo Bridge reopened Tuesday afternoon, more than four hours after a six-vehicle crash during the morning commute that involved four trucks and caused a diesel spill, a California Highway Patrol officer said.
Emergency crews were dispatched about 9 a.m. to Highway 92 near Foster City Boulevard for a report of wreck in the westbound lanes before the toll plaza, CHP Officer Kevin Bartlett said.
The crash involved a big rig hauling dry cement, another big rig, two box trucks, one SUV and one sedan, CHP Officer Art Montiel said.
A preliminary investigation of the crash indicated that a big rig rear-ended a slow-moving box truck. The impact caused the big rig to overturn, leading to a chain reaction that caused the four other vehicles to crash, Montiel said.
The wreck also caused a diesel spill. Caltrans workers arrived to clean up the mess.
All westbound lanes of the bridge were closed for more than four hours. The lanes were reopened around 1:15 p.m. Traffic was stuck at a standstill on the bridge for hours and remained sluggish Tuesday afternoon even after lanes were reopened.
The driver of the rig was taken to the hospital to be treated for minor injuries including complaints of pain, Montiel said.
Contact Natalie Neysa Alund at 510-293-2469. Follow her at Twitter.com/nataliealund.