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

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Malcolm Drilling's clamshell bucket taking a scoop out while excavating the access pit
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Update on Access Pit for Repairing Bertha TBM

August 5, 2014 rockman Project Related Comments Off on Update on Access Pit for Repairing Bertha TBM

There hasn’t been much to report recently for the Alaskan Way Viaduct Tunnel Project in Seattle. As you probably know, Bertha has not advanced since about December of 2013 after drilling through an abandoned steel […]

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Video: CA Devil’s Slide Bypass Tunnels Finally Open

March 27, 2013 rockman Project Related Comments Off on Video: CA Devil’s Slide Bypass Tunnels Finally Open

California motorists can now avoid a dangerous and landslide-prone stretch of the Pacific Coast Highway, Devil’s Slide, through the tunnel bypass. This project has been a fascination of mine since the early days of GeoPrac.  […]

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Bertha TBM Access Pit Excavation Complete

February 9, 2015 rockman Project Related Comments Off on Bertha TBM Access Pit Excavation Complete

The excavation has been completed for the access shaft or rescue shaft that was needed to be able to remove the damaged cutterhead of the Bertha TBM on the Alaskan Way Viaduct Replacement project in […]