8:46 AM: If you’re headed toward the eastbound bridge right now – use Fauntleroy, a texter advises. It’s the annual parade-float backup. Apparently what happened last year on the morning of Seafair Torchlight Parade day is happening again right now, with floats stored at Terminal 5 heading out via lower Spokane. Seafair is again having a parade-participant showcase at Seattle Center in advance of tonight’s parade down 4th Avenue (7:30 pm start, but *no* pre-parade run this year).
8:56 AM: Just checked the SDOT live-video camera for the low bridge in time to see the tail end of the float motorcade (grainy screenshot added above), so you should be OK to use Admiral/Avalon again.