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- It was the world's biggest tunneling machine when it first chewed into the loose dirt and gravel on Seattle's waterfront in 2013. With a cutting head nearly 60 feet wide, it had been built in Japan and shipped across the Pacific to dig a two-mile-long double-decker highway tunnel under downtown.
am_Unition · 2571 days ago · link ·
YO GET IN HERE, THIS THING IS DOIN' IT NOW It's oddly satisfying to hear the crunching. Edit: It's done now.At some point today, the 57.5-foot wide cutting head will gnash through the massive retaining wall on the north end of the tunnel, where a live video feed awaits to capture the moment — and perhaps the off-screen sound of engineers sighing with relief.