Bertha, WSDOT's massive 5-story tall tunneling machine, has finished her job. Now, after reaching the end of her 9,270 foot journey hollowing out a new highway under downtown Seattle, she's being carefully disassembled.
Watch as crews remove the machine's outer shield and get a look at what made Bertha tick.
As work on the machine continues in the pit, disassembly is progressing from inside of the tunnel as well. STP is dismantling the trailing gear and disconnecting temporary utilities and ventilation that were necessary for the machine’s operations. These pieces are being removed through the south end of the tunnel. The below photos show disassembly progress, both in the disassembly pit and in the tunnel.
And if you missed it, watch the ultimate drone's eye view of Bertha's final breakthrough here:
See more at WSDOT's Bertha page here: