UK National Tunneling Day 2017
Miscellaneous

Happy National Tunneling Day (UK)

The British Tunnelling Society (BTS) is encouraging our profession and the public to celebrate National Tunneling Day today, December 7.  Their goal is to promote the industry (and its many professions) to students of all ages […]



Available Resources

Video: Inside tunneling under the Alaskan Way Viaduct

From WSDOT’s video description: After nearly a week of tunneling under the Alaskan Way Viaduct, crews are steadily continuing Bertha’s underground drive towards downtown Seattle. This video gives you a behind-the-scenes glimpse into how the […]


Bertha's scheduled maintenance stop
Project Related

Bertha Demo Period Done, Resumes Mining

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 […]