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.
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There is no estimated time when the bore will reopen.
Stay with ABC7 News for more on this developing story.
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Check traffic maps and drive times.
Traffic near Caldecott Tunnel in Oakland, California on Thursday, December 13, 2018. (KGO-TV)