Big rig crash closes southbound Highway 99 in Madera County

FRESNO, Calif. (KFSN) -- All southbound lanes of Highway 99 near Road 15 in Madera County have reopened after a crash led to asphalt erosion early Saturday morning.

A gas tanker carrying more than 7,500 pounds of gasoline flipped on the freeway at about 1 a.m. CHP officers say the 35-year-old driver from Tracy drove off the shoulder and overturned the truck, but they don't know why. Officers say the driver suffered minor injuries, but the crash left behind asphalt erosion damage on the roadway.

Officers say drugs or alcohol were not a factor.