Seattle Center News
SR 99 Alaskan Way Viaduct to close nightly May 7 through May 10.
The Westbound lanes of the Spokane Street Viaduct will be closed nightly from SR 99 from 9 p.m. until 5 a.m. the following morning on Monday, May 7 - Thursday, May 10. Traffic will be detoured via the Harbor Island off-ramp to the low level Spokane swing bridge.