Tag: tunnel-boring

Roadbuilding

Virginia’s largest ever infrastructure project involves tunnel boring machine

Construction for Virginia's Hampton Roads Bridge-Tunnel Expansion is underway. Watch VDOT explain the tunnel boring process here on Equipment World.

November 5, 2020

Roadbuilding

State Route 99 closed in Seattle for tunnel alignment; crews making good progress

With the closure of State Route 99 due to tunnel work, construction crews are on schedule with good weather, including unusually warm daytime temperatures.

January 18, 2019

Roadbuilding

VDOT to use tunnel boring machine for first time in Hampton Roads Bridge-Tunnel expansion

VDOT will use tunnel boring machine on Hampton Roads project. Check out how the tunnel boring machine will enhance the bridge-tunnel expansion today.

August 6, 2018

Roadbuilding

Bertha stopped after veering off course in home stretch of Seattle’s SR 99 tunnel

Seattle Tunnel Partners (STP) stopped Bertha, the largest tunnel boring machine in the world, on Feb. 28 to make adjustments before it continues on its last 1,000 feet of the 9,270 tunnel for SR 99. Officials report recent surveys indicate the machine is potential out of alignment by several inches. “STP is conducting additional survey […]

March 3, 2017

Roadbuilding

Big Bertha wakes from one-year nap, begins to chew her way into repair pit

For the first time in more than a year, Big Bertha actually bored. According to a report from the Seattle Times, the world’s largest tunnel boring machine, dormant deep below Seattle since late January 2014, has drilled forward a total of 6 feet between late Tuesday night and Wednesday afternoon as crews begin the process of moving Bertha into […]

February 19, 2015

Home

Big Bertha’s delays have pushed back the opening of the tunnel it’s digging by 20 months…so far

Seattle’s new State Route 99 tunnel is officially 20 months behind schedule, and it’s all Bertha’s fault. The Associated Press reports Washington State Department of Transportation officials are now saying that the new tunnel being dug beneath Seattle by Big Bertha, the largest tunnel-boring machine in the world, won’t open until August 2017. And they […]

December 24, 2014

Construction Equipment

Excavation stopped on Big Bertha repair pit due to major ground sinkage in area

The latest in a long string of delays to affect tunnel-boring machine Big Bertha has far greater implications than any of the others, this time threatening the structural integrity of the Alaskan Way viaduct and nearby buildings in the Seattle neighborhood of Pioneer Square. According to a report from The Seattle Times, Washington State Department of Transportation officials […]

December 15, 2014

Construction Equipment

PHOTOS: Amazing images of subway construction in the man-made caverns below New York City

[imagebrowser id=58] Back in June we showed you a handful of pictures from deep below New York City. And while they depicted ongoing construction on the city’s Second Avenue Subway, they looked like more something out of a sci-fi movie. The Second Avenue Subway is the first line to be built in NYC since 1932. […]

April 7, 2014

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

Business

Caterpillar to layoff 300 at mining facility in Illinois, close tunneling plant in Toronto

In the wake of a first quarter that saw profits tumble 45 percent, mostly due to low demand for mining equipment, Caterpillar continues to make moves to rectify the situation announcing layoffs in Illinois and a plant closing in Toronto. Neither of the moves will affect the company’s earthmoving business. After announcing a round of 500 […]

May 6, 2013