Rising Costs and Delays in Seattle Area Wastewater Plant and Tunnels

February 25, 2008 rockman Project Related Comments Off on Rising Costs and Delays in Seattle Area Wastewater Plant and Tunnels

Related Articles

Project Related

Plan for Bertha Repair Submitted, Archaeological Surveys Underway

March 20, 2014 rockman Project Related Comments Off on Plan for Bertha Repair Submitted, Archaeological Surveys Underway

Seattle Tunnel Partners and WSDOT are moving forward with the plans to excavate a 120 foot deep shaft to repair the Bertha Tunnel Boring Machine. Unfortunately, there are archaeological issues since the project team did […]

One of the eight Crossrail Tunnel Boring Machines or TBMs
Project Related

Crossrail – the engineering geology

August 22, 2012 rockman Project Related Comments Off on Crossrail – the engineering geology

For those outside the UK, the Crossrail project is a mega-project upgrade to the London metro area’s subway system. The tunneling portion of the project will consist of 21-km of twin-bore tunnels excavated by eight […]

Blast shield being lowered into Hudson River
Miscellaneous

Port Authority Covers Hudson Subway Tunnels with Blast Shields to Protect Against Terror Attacks

January 27, 2011 rockman Miscellaneous Comments Off on Port Authority Covers Hudson Subway Tunnels with Blast Shields to Protect Against Terror Attacks

The century-old PATH subway tunnels underneath the Hudson River were not excavated through bedrock, but rather under a thick layer of silt and clay. Apparently there is a a sufficient security concern to warrant protecting […]