STP, a joint venture of New York-based Dragados USA and Tutor Perini Corporation, is hopeful Bertha will be back to burrowing by the end of this summer, though WSDOT deputy project administrator Matt Preedy told a March 15 project stakeholders meeting that “if it takes a little bit longer, that’ll be OK because the project manager says it has to be done right.” STP has repeatedly touted Fall 2017 as the completion date for the $3 billion tunnel that will replace the aging, structurally suspect Alaskan Way viaduct.
A “sister TBM,” Pamela, is paralleling Brenda’s route and will reach Roosevelt station this summer. Both TBMs will then proceed beneath Seattle’s University District to Husky Stadium and a planned 2017 connection with Sound Transit’s soon-to-be-completed $1.9 billion University Link extension.
Brenda’s and Pamela’s tunnels are being constructed by a joint venture of Jay Dee, Coluccio, and Michels under a $462 million contract. The Northgate Link Extension is scheduled to be operational in 2021.