View Larger Image Workers begin preparing soil for Bertha’s restart The Seattle Times » The tunnel boring machine, known as Bertha, is almost ready to resume digging. Bertha’s new rotary cutter and soil mixing arms will be tested over the next few weeks. The Seattle Tunnel Partners are injecting grout into the soil and plan to resume digging by November 23, 2015 with construction completion expected by March 2018. By Michelle|2018-02-05T16:42:14-08:00October 14, 2015|Alaskan Way Viaduct, Design-Build, Roads, Washington|Comments Off on Workers begin preparing soil for Bertha’s restart Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInWhatsAppTelegramTumblrPinterestVkXingEmail About the Author: Michelle Related Posts With 100 People Per Day Dying in Crashes, Lawmakers Weigh Road Safety Options Gallery With 100 People Per Day Dying in Crashes, Lawmakers Weigh Road Safety Options Getting There: Congestion pricing isn’t coming to Spokane, but these roads aren’t free and never were Gallery Getting There: Congestion pricing isn’t coming to Spokane, but these roads aren’t free and never were The Boring Company: What 8 Cities Really Think of Elon Musk’s Tunnel Vision Gallery The Boring Company: What 8 Cities Really Think of Elon Musk’s Tunnel Vision Trump Fiscal 2020 Budget Request Prioritizes Infrastructure Grants Gallery Trump Fiscal 2020 Budget Request Prioritizes Infrastructure Grants