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Tag: tunnels: Page 2
Roadbuilding
Sixth element, reaching 90 feet deep, placed for Midtown Tunnel in Virginia
The sixth of 11 elements being used to create a new two-lane Midtown Tunnel connecting Portsmouth and Norfolk, Virginia, was placed March 5 by the Elizabeth River Tunnels (ERT) Project team. This element will be the deepest component of the tunnel (roughly 90 feet), which is being placed parallel to the existing U.S. 58 Midtown […]
March 13, 2015
Construction Equipment
Lady Bird is the 1,300-ton tunnel-boring machine digging DC’s 13-mile sewer tunnel (PHOTOS, VIDEO)
[imagebrowser id=46] Each year in Washington, D.C., about 2 billion gallons of raw sewage is dumped into the Potomac River, the Anacostia River and Rock Creek, according to a report from the Washington Post. But Lady Bird, a massive tunnel-boring machine, is working to change that. The machine is digging a $2.6 billion 13-mile tunnel system […]
March 19, 2014
Construction Equipment
Big Bertha, world’s largest tunnel-boring machine, lowered into starting position in Seattle
With the digging of the Washington State Route 99 tunnel in Seattle scheduled to start in July, the Washington State Department of Transportation recently lowered the head of Big Bertha, the world’s largest tunnel-boring machine, into the pit that will serve as its starting position. Bertha made her triumphant arrival in Seattle at the beginning of April […]
June 5, 2013
Construction Equipment
Big Bertha, world’s largest tunnel-boring machine, arrives in Seattle
The “Big” in Bertha’s name isn’t there for the catchiness. It’s there because it’s apt. With a 57-foot diameter and a length of a football field, Big Bertha is the world’s largest tunnel-boring machine. She’s quite hefty too. Bertha is assembled from 41 parts, the largest of which weighs in at 900 tons. And she […]
April 4, 2013
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NYC tunnel expansion the largest transportation project in U.S.
New York City is undergoing the biggest addition to its transportation system since Penn Station opened in 1910, Time reported. And as you can see above, the project has resulted in some amazing photos. Time has put together some of the more stunning photos, taken by the Metropolitan Transportation Authority, and put together a great slideshow which […]
February 28, 2013
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Japanese tunnel collapses, kills 9
Aging bolts are a possible culprit behind the collapse of concrete ceiling slabs that fell from the roof of a highway tunnel in Japan Monday, crushing three moving vehicles, killing nine people and injuring at least two others, USA Today reported. The Sasago Tunnel is 3 miles long and links the capital to central Japan. […]
December 4, 2012
Roadbuilding
The city under your feet
Under many of our big cities is another city. A place of tunnels and sewers and open spaces. Steve Duncan studies and photographs these places. If I am the Roadologist, Steve is the Sewerologist. In fact he calls his postgraduate studies work “sewerology.”  It’s the sort of idea that can change your city experience. If […]
August 6, 2012
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