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Launch Pit Preparation, SR 99 Tunnel Project, Seattle, WA
USA

Early morning on a cloudy Seattle day in August, the aging Alaskan Way Viaduct is being torn down and the downtown waterfront section is being replaced by a bored tunnel. Drilled shafts are being installed by Malcolm Drilling to form secant pile retaining walls to support the 400 ft x 80 ft x 80 ft launch pit for the SR 99 tunnel boring machine on the Alaskan Way Viaduct Replacement Program. Excavation of the pit is underway in preparation for the launch of a world record 57.5-ft diameter tunnel boring machine.

Copyright: Bill Edwards
Type: Spherical
Resolution: 11824x5912
Taken: 22/08/2012
Uploaded: 21/08/2014
Updated: 01/04/2015
Views:

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Tags: alaskan way viaduct replacement; tunnel; launch pit; wsdot; seattle; washington; drilling; malcolm drilling; tbm; tunnel boring machine; construction
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More About USA

The United States is one of the most diverse countries on earth, jam packed full of amazing sights from St. Patrick's cathedral in New York to Mount Hollywood California.The Northeast region is where it all started. Thirteen British colonies fought the American Revolution from here and won their independence in the first successful colonial rebellion in history. Take a look at these rolling hills carpeted with foliage along the Hudson river here, north of New York City.The American south is known for its polite people and slow pace of life. Probably they move slowly because it's so hot. Southerners tend not to trust people from "up north" because they talk too fast. Here's a cemetery in Georgia where you can find graves of soldiers from the Civil War.The West Coast is sort of like another country that exists to make the east coast jealous. California is full of nothing but grizzly old miners digging for gold, a few gangster rappers, and then actors. That is to say, the West Coast functions as the imagination of the US, like a weird little brother who teases everybody then gets famous for making freaky art.The central part of the country is flat farmland all the way over to the Rocky Mountains. Up in the northwest corner you can find creative people in places like Portland and Seattle, along with awesome snowboarding and good beer. Text by Steve Smith.