Multi-vehicle crash blocks right westbound Caldecott tunnel bore

OAKLAND, Calif (KGO) -- A multi-vehicle accident is blocking the right westbound bore of the Caldecott Tunnel.

Traffic outside of the traffic is being diverted into the adjacent bore. There is a massive back up on westbound Highway 24.

There is no estimated time when the bore will reopen.

Stay with ABC7 News for more on this developing story.

Check traffic maps and drive times.