A woman died after a car went off of westbound Interstate 580 and down a ravine Wednesday afternoon in eastern Alameda County near the Altamont Pass, a California Highway Patrol spokesman said.
The crash was reported at 1:21 p.m. on westbound I-580 near Grant Line Road.
A vehicle went off the south edge of westbound I-580 and down a ravine between the westbound and eastbound sides of the freeway before overturning, CHP Officer Tyler Hahn said.
The driver died at the scene and her name hasn't been released.
The crash initially blocked the two left westbound lanes of the freeway in the area. All lanes reopened by 3:10 p.m., according to the CHP.
Investigators are asking anyone who witnessed the crash to call the Dublin CHP office at 828-0466.