The Bay Bridge will close down over the Labor Day weekend. Again. CalTrans announced today that they will shutdown the bridge across the bay in both directions on Friday night, Sept. 4, until Tuesday morning, Sept. 8. According to SFGate,"the closure will allow construction crews to cut a portion of the existing double-deck eastern span near Yerba Buena Island, and slide it out. In its place, they'll roll in a new double deck section that will re-route traffic onto a curving temporary bypass for three to four years." This work is all a part of the new eastern span, which is expected to open in 2013.