Bertha, the world’s largest tunnel-boring machine, is in position to be torn apart so it can be repaired. State transportation officials say the broken machine reached a stopping point inside the ...
Bertha, the tunnel boring machine that spent nearly four years digging under Seattle, is no more. WSDOT announced that disassembly of the world’s largest tunneling machine was completed Wednesday ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback