More From State Route 99 construction

Bertha is nearly ready to start tunneling again (VIDEO)

Bertha is nearly ready to start tunneling again (VIDEO)

Posted by Bobby Atkinson on Dec 17, 2015

The massive tunnel-boring machine that's been sidelined in Seattle for two years could be back to boring by New Year's. The ...

Bertha delayed again; won’t restart drilling until late December

Bertha delayed again; won’t restart drilling...

Posted by Bobby Atkinson on Oct 26, 2015

The Seattle Tunnel Partners have once again delayed the restart of drilling for the State Route 99 tunnel, with Bertha not expected ...

Crews prepare soil for Bertha to begin tunneling again

Crews prepare soil for Bertha to begin tunneling again

Posted by Bobby Atkinson on Oct 16, 2015

One of the last steps to getting Big Bertha back to boring beneath Seattle is underway. The Washington State Department of ...

Water main damaged by Big Bertha repair excavation could cost WSDOT $4 million

Water main damaged by Big Bertha repair excavation...

Posted by Wayne Grayson on Apr 14, 2015

Four months after crews temporarily stopped excavation on a repair pit for the world's largest tunnel-boring machine due to ground sinkage, ...

PHOTOS: Big Bertha’s 2,000-ton front end lifted to the surface. How the world’s largest tunneler was raised

PHOTOS: Big Bertha’s 2,000-ton front end lifted...

Posted by Wayne Grayson on Apr 01, 2015

After a year of slumber and almost a month after chewing her way into a 12-story repair pit, Big Bertha, the ...

Camera gives a live view of construction on Big Bertha’s 12-story repair access pit

Camera gives a live view of construction on Big...

Posted by Wayne Grayson on May 13, 2014

Just because Big Bertha is down for nearly a year, that doesn't mean work around the world's largest tunnel boring ...

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