Bertha delayed: World’s largest tunnel boring machine won’t dig again until 2015 Bertha must be real bored by now. The world’s largest tunnel boring machine, which is digging a 1.7-mile underground tunnel in Seattle,… Read More
Bertha’s boo-boo: Why the world’s largest tunnel boring machine is broken It’s been two months since the world’s largest tunnel boring machine stopped drilling underneath Seattle, but now Washington’s Department of… Read More
Here’s what is blocking Bertha, the world’s largest tunneling machine Bertha, the world’s biggest tunnel-boring machine currently underneath Seattle, has been stuck for nearly one month. Now, crews are close… Read More
World’s largest boring machine begins digging 2-mile underground tunnel Bertha is ready to start digging. The world’s largest boring machine began drilling a nearly 2-mile highway tunnel underneath Seattle… Read More
Welcome to Seattle, Bertha: World’s largest tunnel boring machine arrives in Emerald City (Video above is from our news partner, KING5) Welcome to Seattle, Bertha. Coming all the way from Osaka, Japan, the… Read More
