The Seattle Times » After stalling in December 2013, Bertha, the tunnel-boring machine, has moved forward three feet and will bore upward 20 feet in order to be repaired. Reduced payments on the $1.44 billion design-build contract for the Alaskan Way Viaduct will continue to be made to the Seattle Tunnel Partners while repairs are made. Bertha is expected to resume digging in March 2015.