but not everyone is so sure that s a good idea. the best thing to do would be to wait until the retrofit is complete, then open the bridge. reporter: but experts and transportation officials have repeatedly insisted that the real threat to public safety is keeping drivers on the old eastern span, which remains vulnerable to an earthquake. the existing bridge is the one folks ought to be worried about and that s the one they shouldn t be trusting. reporter: the oversight committee agreed that the bridge will open the morning of september 3rd with little fanfare, a simple chain cutting ceremony and potentially a larger scale celebration next year. the temporary fix will be going in this weekend. it should take only about a day to install it. just to give you an idea of how quickly this whole process is moving along, within about an hour of that unanimous vote happening, we saw that caltrans had already put signs up along the approach to the bay bridge, announcing the