You know how everyone says San Francisco is a little bubble utopia isolated from the realities of the rest of the world? Well, you might as well embrace it this Labor Day, because the eastbound Bay Bridge is closed all weekend.

Yes yes, you probably already know, since Caltrans has commissioned every single flashing road sign in the entire state to remind you for the last two weeks. We feel badly for any Amber Alert children kidnapped this weekend. BART will run extra trains, there's extra ferries running -- and a few charter buses will be allowed on the bridge, including the ones hired by the hapless couple that's been planning their Labor Day Treasure Island wedding for the last two years (as well as the ones for the Baltimore Orioles and the Texas Rangers, who are coming in to play the A's).

This is it for awhile in terms of big projects -- but expect delays for the next 2 and a half years, as the crews demolish the westbound approach (goodbye, weird lane that looks like it's exiting at Fremont but then puts you back on 101), and set up the detour lanes going around Yerba Buena Island.