Building a crane to build an even bigger crane
Crews assemble the boom of a 600-ton crane at the site of the pit that will be used to access and repair Bertha, the SR 99 tunneling machine. This crane is tasked with assembling the giant gantry crane that will lift Bertha’s front end out of the pit for repair. Learn more about the Alaskan Way Viaduct Replacement Program at www.alaskanwayviaduct.org or follow Bertha, the SR 99 tunneling machine, on Twitter @BerthaDigsSR99.
Building a crane to build an even bigger crane
Crews assemble the boom of a 600-ton crane at the site of the pit that will be used to access and repair Bertha, the SR 99 tunneling machine. This crane is tasked with assembling the giant gantry crane that will lift Bertha’s front end out of the pit for repair. Learn more about the Alaskan Way Viaduct Replacement Program at www.alaskanwayviaduct.org or follow Bertha, the SR 99 tunneling machine, on Twitter @BerthaDigsSR99.