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Seattle's Beacon HIll Tunnel, constructed by Obayashi Corp
Miscellaneous

Obayashi Corp Making It’s Mark on US Tunneling Jobs

November 20, 2009 rockman Miscellaneous 2

Tunneling Business Magazine has a very nice cover story on Obayashi Corp, a well-known Tokyo, Japan-based mega-construction company with some impressive tunneling credentials.  In their 30-years of working in the US, they were the first […]

This computer generated picture shows the so-called Stad Ship Tunnel. Picture: AFP /Stadskipstunnel.no/NORDWEST3D
Project Related

Norway wants to build world’s first tunnel for ships

May 8, 2013 rockman Project Related Comments Off on Norway wants to build world’s first tunnel for ships

The Norwegian government wants to build a tunnel linking two fjords that would be large enough to pass 16,000 tonne cargo and passenger ships. The treacherous stretch of waterway has seen 46 accidents and 33 […]

Bertha TBM cutterhead being lowered back into access shaft
Project Related

Tunneling machine’s front end bolted in place

August 31, 2015 rockman Project Related Comments Off on Tunneling machine’s front end bolted in place

The troubled Alaska Way Viaduct Replacement Tunnel TBM known as Bertha has reached a milestone in its repair. The front cutterhead has been repaired, and has been lowered back into the access shaft to be […]