Construction Equipment
Ag Equipment
Roadbuilding
Dealers
Business
Technology
Tag: Big Bertha cutterhead
Roadbuilding
PHOTOS: Big Bertha’s 2,000-ton front end lifted to the surface. How the world’s largest tunneler was raised
[imagebrowser id=225] After a year of slumber and almost a month after chewing her way into a 12-story repair pit, Big Bertha, the world’s largest tunnel-boring machine, is finally under repair in Seattle. Crews worked for the better part of March to disassemble the machine’s front end before lifting the machine’s cutterhead and body shield panels—a […]
April 1, 2015
Construction Equipment
Repairs to Big Bertha will require a 12-story pit and removing the tunnel-boring machine’s cutterhead
Officials from the Washington State Department of Transportation have announced that in order to repair the world’s largest tunnel-boring machine, her head will need to come off. The announcement, which came during a presentation to city council members in Seattle, comes nearly three weeks after WSDOT officials announced that Big Bertha would be out of […]
February 27, 2014
Page 1 of 1