No one mentioned Seattle's own huge tunnel machine that infamously broke down partway into the job. It was a little larger, at 17.5 meters vs 11.91 meters for t

No one mentioned Seattle's own huge tunnel machine that infamously broke down partway into the job. It was a little larger, at 17.5 meters vs 11.91 meters for this latest UK tunnel machine. It broke down about 1000 feet into the 10k long tunnel. Among the many reasons why the US can't build infrastructure like this is we had specific public votes and lots of grousing along the way. I was proud we managed to pull it off and recover from that major failure. https://en.m.wikipedia.org/wiki/Bertha_(tunnel_boring_machine) https://en.m.wikipedia.org/wiki/Bertha_(tunnel_boring_machin...