tunnel

Light Rail
7:48 pm
Mon April 28, 2014

Tunnel Machine Set To Dig Under Seattle, But It's Not Bertha

The machine Sound Transit is using to dig a light-rail tunnel from Northgate to the University of Washington in Seattle.
KUOW Photo/John Ryan

A tunnel machine is set to resume digging beneath the streets of Seattle in mid-June.

No, it's not Bertha. It's Brenda.

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Megaprojects
12:05 pm
Tue April 22, 2014

No More Tunneling By Bertha Until March 2015

Drilling crews started on Friday and plan to continue around the clock for a month, injecting a cement-water mix into the ground where a shaft will be dug to expose the front of the stalled tunnel machine.
Credit KUOW Photo/John Ryan

State transportation officials say the tunnel machine now stuck beneath the downtown Seattle waterfront won't resume tunneling for another 10 months. Digging is now forecast to resume in March 2015.

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New Obstacles To Megaproject?
8:23 am
Fri March 14, 2014

Archaeological Digging Starts On Seattle's Stalled Tunnel Project

Removing Bertha's cutter head will require digging through soil that could have archaeological resources.
Flickr Photo/WSDOT

The past could present yet another obstacle to the future of the state Route 99 megaproject on the Seattle waterfront.

Archaeologists with the tunnel project started digging a series of 60 small holes Thursday to see if any signs of historic or prehistoric human activity are in the area.

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SR 99 Tunnel Project
9:44 am
Fri February 21, 2014

Tunnel Tolling: Build It, And They Won't Come?

The Alaskan Way Viaduct section of state Route 99 is being replaced by a tunnel under downtown Seattle and will be partially paid for with toll revenues.
Credit Flickr Photo/camknows (CC-BY-NC-ND)

Anyone who's hosted a party has probably had that panicky feeling beforehand: What if you throw a big party and nobody comes?

State transportation officials face a similar worry: What if after they build a $3.1 billion underground highway to replace the Alaskan Way Viaduct, not enough people use it?

Build It And They Won't Come?

The state Legislature has decreed that tolls have to pay for $200 million of the state Route 99 tunnel's construction cost.

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Stuck In Place
4:51 pm
Fri February 7, 2014

Seattle's Tunnel Machine Chokes On Dirt

Seattle Tunnel Partners workers atop a tank of soil conditioner used by tunnel builders
KUOW Photo/John Ryan

State officials said Friday afternoon that the tunneling machine known as Bertha had to stop, not because it hit foreign objects, but because it clogged with dirt.

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Seattle Waterfront
9:46 am
Wed September 18, 2013

Inslee Says 'Big Bertha' To Resume Drilling Seattle Tunnel

WSDOT

Originally published on Tue September 17, 2013 4:44 pm

"Big Bertha" should soon get back to work digging a nearly two mile tunnel to replace Seattle’s Alaskan Way Viaduct.

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Alaskan Way Viaduct
8:11 am
Wed July 31, 2013

Problems And Progress For Seattle's Waterfront Tunnel

Architect Brian Runberg climbing onto the roof of the building he owns, with a building motion detector above him and the Alaskan Way Viaduct directly behind him.
KUOW Photo/John Ryan

The world’s largest tunneling machine started grinding into the soil beneath downtown Seattle Tuesday afternoon. The machine known as Bertha is digging a 58-foot-wide tunnel to replace the Alaskan Way Viaduct.

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State Route 99 Tunnel Megaproject
7:38 am
Wed April 3, 2013

The Tradition Of Naming Tunneling Machines

Bertha, on board the Fairpartner, in Elliot Bay
Bow Jones

Bertha is here. The world’s largest tunnel boring machine arrived in Seattle Tuesday after being shipped from Japan. It’s expected to reach land sometime this week. After that, in a few months, it will get to work drilling the tunnel that will replace the Alaskan Way Viaduct.

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