Beginning Friday, April 29, the SR 99 Alaskan Way Viaduct will be closed for approximately two weeks as a precautionary measure while Bertha, the SR 99 tunneling machine, travels beneath the structure. The viaduct will be closed between the south end of the Battery Street Tunnel and the West Seattle Bridge. For the most up-to-date information, visit 99closure.org.
Make a travel plan and expect additional congestion throughout the region
This closure will disrupt local and regional traffic patterns. WSDOT is coordinating with other transportation agencies to keep people moving through a variety of measures, but is expecting the closure to increase traffic congestion regardless. We are asking travelers in Seattle and the surrounding region to plan ahead and consider adjusting their travel habits to help us keep people moving on highways and city streets. We recommend that you:
Need help making a travel plan?
Take a look at this travel alternatives handout for a detailed list of resources and options for changing your commute.
For the latest information regarding traffic conditions and tunneling progress:
*Bookmark the official 99closure.org website
*Check Twitter for major traffic and project alerts: @BerthaDigsSR99, @WSDOT_Traffic, @SeattleDOT, @KCMetroBus, @SoundTransit, @MyCommTrans, #99closure
*Contact us at firstname.lastname@example.org or 1-888-AWV-LINE (298-5463)