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, it’d 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 that’s expected to solidify the bridge for five or more decades, there aren’t too many workers to be seen. That’s […]

August 4, 2015

Roadbuilding

Dangerous tunnel ‘game’ ends in vehicular crash, multiple injuries

You’ve probably heard the old superstition about holding your breath through a tunnel for good luck — or maybe you play it as a game with your family. I know I’ve attempted to not breathe for fun if going through a short tunnel with friends. But I would never try to hold my breath until […]

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 world’s 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 […]

January 30, 2014

Home

No. 6 in 2013: Big Bertha digs in before being stopped in her tracks

There’s been a lot of excitement this year about the world’s largest tunnel boring machine. Named “Big Bertha,” 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 […]

December 30, 2013

Construction Equipment

Subway expansion in Delhi to set record with simultaneous use of 34 tunnel-boring machines

Seattle might have the world’s largest tunnel-boring machine, but Delhi, India will soon have a record-setting host of the machines at its disposal. Construction workers in India’s capital city have begun Phase III of the extremely complex task of extending the city’s subway system. How complex? The engineering team recently announced that it will be […]

June 28, 2013