The Bay Bridge is currently closed until Tues at 5am. It's actually two bridges that meet at Treasure Island. The Eastern half is being rerouted this weekend onto a newly completed bridge. (A pretty amazing project, by the way.) This includes a slight change in the connectors at Treasure Island and in Oakland. And since it's an entirely new bridge, the map probably treats it as a new road.

So, quite possibly, the new tiles for the map are in transition or not yet propagated?

Edit: A correction - they meet on Yerba Buena Island technically, not Treasure Island.