An overturned vehicle on Interstate 80 is closing access to Treasure Island Road from both directions, according to the California Highway Patrol.
The crash prompted the closure of the eastbound and westbound I-80 off-ramps to Treasure Island and Yerba Buena Island.
The off-ramps are estimated to reopen around 2 p.m.
Motorists should expect delays in the area.
No information about possible injuries was immediately available.
This is a developing story. Please check back for updates.