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

Standards and Codes

US House Passes National Tunnel Inspection Program

January 25, 2008 rockman Standards and Codes Comments Off on US House Passes National Tunnel Inspection Program

The US House of Representatives passed legislation approving a national tunnel inspection program. This of course came about as a result of a fatal accident from 2006 in a tunnel on Boston’s Big Dig project where a concrete ceiling tile fell on a car killing one person. More after the break. 

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Malcolm drilling crews setting up to drill secant pile shafts for TBM launch pit
Project Related

Digging deep to drill Highway 99 tunnel

April 29, 2012 rockman Project Related Comments Off on Digging deep to drill Highway 99 tunnel

Construction has started on the tunnel boring machine launch pit for the WSDOT SR 99 Tunnel Project (Viaduct Replacement). The 420 foot long pit is being constructed using secant pile retaining walls, with 2 rows […]

Project Related

NYC Subway Tunneling Begins Under Second Avenue, TBM Launched

May 25, 2010 rockman Project Related Comments Off on NYC Subway Tunneling Begins Under Second Avenue, TBM Launched

The new line will serve 200,000 riders per day when it opens in 2017. Total project cost is $4.5 billion. An interesting note regarding the tunnel boring machine itself: The tunnel boring machine was originally […]