By Greg Rasa
It has been a long, yet short and strange trip. Bertha, which at 57.5 feet in diameter was the world’s largest tunnel-boring machine when it entered the ground, ends its four-year, 1.7-mile odyssey beneath Seattle today, its job to dig a new vehicle tunnel completed.
It is emerging from underground and into a pit where its 4-million-pound cutting head will be disassembled over several months.
Here is a live video feed from KING-5 TV in Seattle. Don’t blink, or you might might the massive machi
Watch as world’s biggest tunnel machine Bertha emerges from beneath Seattle originally appeared on Autoblog on Tue, 04 Apr 2017 11:10:00 EDT. Please see our terms for use of feeds.
Source:: Autoblog feeds