Caltrans will extend Labor Day Weekend's Bay Bridge closure by an additional day. The extra day is needed to seamlessly shove in a section of bridge bypass at the tunnel. So, the bridge will close at 8 p.m. on Thursday Sept. 3, then open again at 5 a.m. on Tuesday Sept. 8. The bridge, by the way, will be closed in both directions. According to reports, this extra day will make "the first non-holiday weekday that the bridge has been closed since 1989 when the Loma Prieta earthquake collapsed part of the bridge deck."