The Washington State Department of Transportation (WSDOT) will close the majority of the Alaskan Way Viaduct at 7:30 p.m. on Friday, October 21 until 5 a.m. Monday, October 31.
During the closure, crews will tear down large sections of the southern mile of the viaduct, and complete temporary connections to a new SR 99 bridge currently under construction on the west side of the viaduct in SODO. Also, the northbound viaduct between the South Royal Brougham Way on-ramp and the Battery Street Tunnel will open from 5 a.m. to 7 p.m., Monday through Friday, and for special events at CenturyLink Field, but closed other times.
Drivers are encouraged to consider alternatives to their normal commute. WSDOT suggests the following options: carpooling, vanpooling riding the bus, water taxi, train or light rail; working from home or adjusting work schedules; checking traffic conditions before hitting the roads; using alternate routes where possible; delaying or combining trips.
Personally, I encourage carpooling, vanpooling riding the bus, water taxi, train or light rail even on days when the Viaduct is working fine.
My prediction: Most news outlets won’t cover it much until a week ahead and then will be like OHMYGOD!!!!!!!!!!! for a solid week. Then traffic is a little worse downtown but not much. But like I-5 a few years ago, or I-405 in LA, people will adjust and be fine.