CHP Officer Marc McWilliams says the freeway's northbound and southbound lanes were shut down Friday morning after a tractor struck a gas main, causing a small explosion, a fire and a gas leak. Rail traffic in the area was also halted.
PG&E spokeswoman Brittany Chord says there have been no injuries. Several residents and businesses in the area were evacuated.
Crews were able to shut off the gas that was blowing off the ruptured pipe. The concentration of gas has gone down.