The front of the damaged digging machine for the Highway 99 tunnel project sits at the bottom of an access pit in March 2015 in Seattle. Crews were dismantling the front of the machine so they could bring it to the surface in three pieces and repair broken parts.
The front of the damaged digging machine for the Highway 99 tunnel project sits at the bottom of an access pit in March 2015 in Seattle. Crews were dismantling the front of the machine so they could bring it to the surface in three pieces and repair broken parts. Elaine Thompson AP
The front of the damaged digging machine for the Highway 99 tunnel project sits at the bottom of an access pit in March 2015 in Seattle. Crews were dismantling the front of the machine so they could bring it to the surface in three pieces and repair broken parts. Elaine Thompson AP

A look back at Seattle’s tunnel machine Bertha

April 01, 2017 3:14 PM

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