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Tag: tunnel: Page 2
Roadbuilding
Rare design has crews working inside a tunnel to make bridge repairs in Michigan
In a drive over U.S. 131 Bridge in Michigan, itâd be easy to miss that bridge is in the middle of an extensive rehab project. There may be some traffic barrels along the side, but for a project thatâs expected to solidify the bridge for five or more decades, there arenât too many workers to be seen. Thatâs [âŚ]
August 4, 2015
Roadbuilding
Dangerous tunnel âgameâ ends in vehicular crash, multiple injuries
Youâve probably heard the old superstition about holding your breath through a tunnel for good luck â or maybe you play it as a game with your family. I know Iâve attempted to not breathe for fun if going through a short tunnel with friends. But I would never try to hold my breath until [âŚ]
May 28, 2014
Construction Equipment
Tunnel-boring machine Big Bertha moves forward 2 feet in test run to see if blockage is fully removed
After nearly two months of downtime caused by a steel pipe stuck in her teeth, Big Bertha, the worldâs largest tunnel-boring machine, briefly went back to work beneath Seattle. According to a report from the Associated Press, the Washington State Transportation Department announced that Bertha moved two feet on Tuesday which was just enough progress [âŚ]
January 30, 2014
Home
No. 6 in 2013: Big Bertha digs in before being stopped in her tracks
Thereâs been a lot of excitement this year about the worldâs largest tunnel boring machine. Named âBig Bertha,â she arrived in Seattle in April where she is digging a 1.7-mile tunnel for the new State Route 99. The $80 million machine stands five stories tall and moves along at 3 inches per minute. Despite her [âŚ]
December 30, 2013
Construction Equipment
Subway expansion in Delhi to set record with simultaneous use of 34 tunnel-boring machines
Seattle might have the worldâs largest tunnel-boring machine, but Delhi, India will soon have a record-setting host of the machines at its disposal. Construction workers in Indiaâs capital city have begun Phase III of the extremely complex task of extending the cityâs subway system. How complex? The engineering team recently announced that it will be [âŚ]
June 28, 2013
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