District 1 Seattle City Councilmember Lisa Herbold shared this news regarding impacts to transportation when the Alaskan Way Viaduct closes in the next few months.

During coming months WSDOT will permanently close the Alaskan Way Viaduct, and open the SR99 tunnel.  WSDOT has announced that they will provide about a month’s notice before the start of the closure. The tunnel will open around three weeks after the closure of Viaduct; WDOT has an information page about the planned three-week closure of SR99; their webpage includes suggestions for travel alternatives.

The closure of the Alaskan Way Viaduct will impact bus routes from West Seattle that currently access Downtown on the Alaskan Way Viaduct, such as the C Line, the 120, and several other lines.

Eventually, permanent access to Downtown from West Seattle on SR99 will be through a an exit onto Alaskan Way. Buses will turn onto Columbia, then continue northbound on 3rd Avenue. During most of the interim period while the Viaduct is being removed—likely much or all of 2019—those buses will exit SR99 at Dearborn, then travel on 1st Avenue to Cherry, then continue on 3rdAvenue.

It’s important that we do what we can to ameliorate what will undoubtedly be a significant impact, and facilitate timely bus travel as much as possible. According to 2017 data, there were more than 29,000 daily boardings from West Seattle and adjacent communities on buses that access Downtown on the Alaskan Way Viaduct. It’s clear that West Seattle commuters will bear a heavy share of the burden for the closure of the Alaskan Way Viaduct.

I’ve written to SDOT’s Interim Director highlighting the importance of Downtown access for West Seattle, and to ask if SDOT intends to reserve a dedicated lane for buses on 1st Avenue. A dedicated transit lane was planned for the Center City Streetcar project, currently on hold.  The letter is linked here.

The plan to replace the Alaskan Way Viaduct with a tunnel was approved by the state legislature in 2009; background WSDOT documents and planning reports from 2004 to 2011 are available at WSDOT’s project website.