Bronze Yard â11, the official standard of length for the United States between 1855 and 1892, when the Treasury Department formally adopted a metric standard. Bronze Yard â11 was forged to be an exact copy of the British Imperial Standard Yard held by Parliament.
âAbsolutely it's the way to go-every city should have a big tunnel underneath it,â said Hauser. âAlaskan Way Viaduct, which is old and ugly and dirty, and it's gonna fall down if the earth moves and it shakes any more, it's gonna fall.â.Big Bertha doesn't just drill-it installs concrete wall panels as it goes, leaving a finished tunnel behind. âThis is a work of art,â said Hauser.Alaskan Way Viaduct, which is old and ugly and dirty, and it's gonna fall down if the earth moves and it shakes any more, it's gonna fall.â. Big Bertha doesn't just drill-it installs concrete wall panels as it goes, leaving a finished tunnel behind.
On January 12, 2009, the state of Washington, King County, the city of Seattle, and the Port of Seattle revealed that they had agreed to replace the viaduct with a four-lane, 2-mile (3.2 km) long underground tunnel.he 2001 Nisqually earthquake damaged the viaduct and its supporting Alaskan Way Seawall and required the Washington State Department of Transportation (WSDOT) to invest US$14.5 million in emergency repairs. Experts give a 1-in-20 chance that the viaduct could be shut down by an earthquake within the next decade.