The crash occurred shortly before 5 a.m. on the Valley View Street off-ramp on the westbound side of the freeway.
[Ads /]
It was not known why the woman was on the freeway at the time of the collision.
The California Highway Patrol did not have a description of the hit-and-run suspect or the suspect's car.
[Ads /]
The victim's identity was not immediately released.
CHP officials said witnesses called 911 reporting that a woman was walking on the freeway.
Responding officers say they arrived on scene and saw the woman had been struck by at least one vehicle.
The Valley View Street off-ramp was shut down as investigators gathered evidence, hoping to track down the driver or drivers responsible.