I thot I recognized Bertha. As big as she is , she got stuck on a piece of pipe the citydicks forgot to tell her about. Put her out of action for a year, as I recall.
About Bertha...
Something that was hushed up pretty quick is that another reason Bertha was immobile was because two unions were fighting it out over who was going to get paid to dump the spoil dirt - Longshoremen or construction, IIRC. they picketed the site for a couple of months and IMHO the digger head was damaged sitting in one position too long.
https://www.knkx.org/business/2013-09-17/longshoremen-take-down-picket-line-bertha-to-resume-digging
https://www.seattletimes.com/seattle-news/tunnel-digger-bertha-heading-back-to-work/
I used to work in the area and I remember the pickets.
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