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Bertha, The World’s Largest Tunnelling Machine Heading To Seattle
Bertha
@BerthaDigsSR99
I’m Bertha, the world’s largest-diameter tunneling machine. In summer 2013, I’ll start digging the SR 99 tunnel to replace Seattle’s Alaskan Way Viaduct.
Osaka, Japan · alaskanwayviaduct.org
Tweets
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@Mariners Extra large! I’d like to attend the home opener on 4/8, but I’ll still be in many pieces. Plus I’d take up too many seats. -
Two of my five largest pieces have boarded the ship that will take me to Seattle. The rest of me is waiting in line. pic.twitter.com/pSNSDcrPFW
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Anyone know how to knit? Could use an extra large
#Sounders scarf for my cruise to Seattle. -
A look at the launch pit where
@BerthaDigsSR99 will begin digging below Seattle this summer. The pit is 80% done. pic.twitter.com/HN84T6grCBRetweeted by Bertha -
I’m set to arrive in Seattle in late March. Come to Milepost 31 tonight at 6 p.m. to learn more about my trip. http://1.usa.gov/Z2GHUJ
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Well, I’m in pieces here in Japan. Don’t worry, that’s part of the plan. I’m being loaded on a ship bound for Seattle.
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Nice photo, Seattle Daily Journal of Commerce. I’ve been staring longingly at it all day. See you soon, launch pit. http://bit.ly/YEIixs
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The Nisqually earthquake struck Seattle on this day in 2001. Did you know tunnels do really well in earthquakes? http://1.usa.gov/ZEaHqC
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I’m not the SR 99 Tunnel Project’s only boring device. Check out the drill working at the tunnel’s north portal. pic.twitter.com/gagCJcCB7r
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The unusual (but successful) path to replacing the viaduct’s southern mile: http://bit.ly/159NaRu
#99tunnel -
I suggested WSDOT allow skateboarding in my launch pit until tunneling starts this summer. They politely declined. pic.twitter.com/KFtYNiF1So
Bertha 
Joe Fryer 
Washington State DOT 
Wth…???
this is a tunnelling machine; built in Japan, heading to seattle to dig a tunnel for hwy