The Bertha tunnel boring machine has resumed chewing away beneath Seattle after a ‘suspension for cause’ order from WSDOT shut it down in January following two safety incidents. The BTM began tunneling with some conditions in place late in February, and those conditions were lifted when the demonstration period ended on March 7. Bertha has now reached her next scheduled maintenance stop, having tunneled a total of 1,560 feet. [Source: WSDOT Alaskan Way Viaduct Replacement Project Page. Image: WSDOT]
Related Articles
Insights on the tunnel design industry and a profile of Brierly Associates
September 20, 2011
rockman
Miscellaneous
Comments Off on Insights on the tunnel design industry and a profile of Brierly Associates
Tunnel for Las Vegas Convention Center Nearly Half Done
February 11, 2020
rockman
Project Related
Comments Off on Tunnel for Las Vegas Convention Center Nearly Half Done
Video: Construction continues on Caldecott Tunnel fourth bore
February 8, 2011
rockman
Project Related
Comments Off on Video: Construction continues on Caldecott Tunnel fourth bore