Displaying Items By Tag: Bertha
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News on Bertha
A drone flight inside Seattle’s SR99 tunnel
It was April 4, 2017, when the work of tunneling machine Bertha was complete, breaking through into her disassembly pit and marking the end of the 1.75-mile long State Route 99 (SR 99) tunne...
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UPDATE: Bertha’s Repair Further Delayed
- Jul, 30, 2014
- News On Projects / Industry
- Seattle, Washington, United States
- Authored by: thestructuralengineer.info
Repairing the tunnel-boring Bertha hit more delays this past week when it was announced the deep access pit that is being built to reach the front side of Bertha would be delayed by a month. Crews nee...
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Seattle Tunnel Partners Setup Bertha Camera
- May, 12, 2014
- News On Projects / Industry
- Seattle, Washington, United States
- Authored by: thestructuralengineer.info
Seattle Tunnel Partners will begin digging a 120-foot deep pit this week to reach the front side of tunnel boring machine Bertha. The machine is the world’s largest tunneling machine, and it has been...
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