Traffic backup started on I-80 in Berkeley near Gillman Street. The backup was about 8 miles before lanes reopened around 7:30 p.m.
MAP: San Francisco and Bay Area Traffic
One westbound lane was open, and all eastbound lanes were closed at the time of the accident that happened shortly after 3 p.m.
California Highway Patrol said the motorcyclist went over the center divide, fell into oncoming traffic and died.