Now that the tunneling machine Bertha’s work is complete, it’s possible to fly a drone with a video camera from end-to-end inside Seattle’s...
ByThe RegistryOctober 23, 2017The inner-workings of the SR 99 (Seattle, Puget Sound) tunneling machine Bertha are now fully visible from the camera above the pit where...
ByThe RegistryJune 15, 2017The SR 99 tunneling machine, Bertha, breaks through to daylight on April 4, 2017 near Seattle’s iconic Space Needle after tunneling 1.7 miles...
ByThe RegistryApril 5, 2017 
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