This is a great little time lapse video from WSDOT that shows the construction of the tunnel behind the Bertha’s disassembly pit for the Alaska Way Viaduct Replacement Project.
Building the Tunnel Behind Bertha
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Rising Costs and Delays in Seattle Area Wastewater Plant and Tunnels
In keeping with our theme of rising costs on tunnel projects, the Brightwater sewage-treatment plant and treated waste pipeline project in King County Washington (Seattle area) is now up to at least $1.84 billion according to the lead consultant on the project. The treated waste pipeline is 13 to 14-miles long and at depths of 40 to 440-ft! It is being constructed nearly entirely by TBM. One source of delay was due to a tunneling subcontractor not being able to get parts (ball bearings?) because they were all being requisitioned by the US War Department for use in military equipment in Iraq and Afghanistan. Click through for information sources and links.
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Geothermal Rig Drills Into Subway Tunnel in Stockholm, Sweden
And a train was actually hit! Fortunately it was stationary on the tracks, but it crushed the side panel of the driver’s carriage. Neither the driver nor any passengers were injured in the incident. The […]
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Riverbank Filtration Tunnel and Pump Station in Louisville, KY Wins 2011 ASCE Award
The Riverbank Filtration Tunnel and Pump Station in Louisville, Kentucky is an innovative project to provide clean drinking water to the Louisville metro area. The project involves using the natural filtration of a sand and […]