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HomeNewsAvailable ResourcesVideo: Changing cutting tools on Bertha TBM

Video: Changing cutting tools on Bertha TBM

August 18, 2016 rockman Available Resources Comments Off on Video: Changing cutting tools on Bertha TBM

This is an interesting video of crews changing cutterhead teeth on the Bertha TBM beneath downtown Seattle. [Source: WSDOT YouTube Channel. Image: YouTube]

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Sinkhole (now filled with concrete) caused by ground loss during Bertha Tunneling
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January 22, 2016 rockman Project Related Comments Off on More Trouble for Bertha TBM, Sinkhole, Tunneling Suspended

The Bertha TBM creating the Alaska Way Viaduct Replacement Tunnel and the Seattle Tunnel Partners JV just can’t seem to catch a break. After being stopped for nearly 2 years to replace the entire cutterhead […]

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Anacostia River in Washington D.C.
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12 Miles of Tunnels for D.C. Sewer

September 11, 2009 rockman Project Related Comments Off on 12 Miles of Tunnels for D.C. Sewer

Anacostia River in Washington D.C.In Washington D.C., the D.C. Water and Sewer Authority (D.C. WASA) finalized a lont-term plan in 2002 aimed at reducing combined sewer outfalls into the Potomac River and its tributary, the Anacostia River. A major portion of this plan is a $2.2 Billion (US) deep tunnel program to handle excess stormwater flows and prevent the combined sewage from being discharged into the environment. Read on for a map and more info. (Photo of Anacostia River, by D.C. WASA)

[…]

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TBM Eliza is tunneling under I-75 in Michican
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Eliza TBM Digs for Michigan’s $162M I-75 Project

January 23, 2021 rockman Project Related Comments Off on Eliza TBM Digs for Michigan’s $162M I-75 Project

A TBM named for Eliza Leggett, an active participant on the underground railroad, and later a suffragist, has been tunneling for the past 6 months on the massive I-75 reconstruction project in metropolitan Detroit. The […]

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