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Tag: Alaskan Way Viaduct: Page 2
Roadbuilding
Bertha is nearly ready to start tunneling again
The massive tunnel-boring machine that’s been sidelined in Seattle for two years could be back to boring by New Year’s. The Washington State Department of Transportation announced that the Seattle Tunnel Partners had begun the final preparations before drilling gets started again with soil and sand being poured into the 120-foot-deep access pit on Sunday. Bertha […]
December 17, 2015
Roadbuilding
Bertha delayed again; won’t restart drilling until late December
The Seattle Tunnel Partners have once again delayed the restart of drilling for the State Route 99 tunnel, with Bertha not expected to start work again until Dec. 23. The Washington State Department of Transportation announced the revised schedule Thursday and said the tunnel most likely would not open until April 2018. That puts the project two years and four […]
October 26, 2015
Roadbuilding
Crews prepare soil for Bertha to begin tunneling again
One of the last steps to getting Big Bertha back to boring beneath Seattle is underway. The Washington State Department of Transportation announced October 14 Seattle Tunnel Partners would begin doing jet grouting in the soil to stabilize the ground above where the massive tunnel-boring machine is set get to work. With jet grouting, a mix of […]
October 16, 2015
Roadbuilding
PHOTOS > Big Bertha gets her head together: How to repair the world’s largest tunnel machine
With the final repairs having been made earlier this summer and Big Bertha finally picked back together underground, Washington State Department of Transportation and Seattle Tunnel Partners crews are hopeful that their 18-month nightmare is nearing a close. Now two years behind schedule, the world’s largest tunnel-boring machine is pegged for a return to digging in […]
September 29, 2015
Roadbuilding
Damage to Big Bertha worse than previously thought
Now that crews are well into the process of dismantling her front-end for necessary repairs, it’s clear that damage to Big Bertha, the world’s largest tunnel-boring machine, is worse than previously thought. Making matters worse, the tunneler likely won’t resume its work drilling the State Route 99 tunnel beneath Seattle by August as the project’s […]
May 26, 2015
Roadbuilding
Did Seattle’s SR 99 tunnel really require Big Bertha? Indeco argues breakers are the answer
Tunnel boring machines such as Big Bertha, the 7,000-ton machine sidelined after a massive fail under the streets of Seattle, shouldn’t always be considered the most efficient option for creating big dig projects, says a new publication produced by Italian hammer manufacturer Indeco and released at the Intermat construction equipment trade show this week. […]
April 23, 2015
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
Roadbuilding
Watch time-lapse of Highway 99 construction
The Washington State Department of Transportation was kind enough to release the following time-lapse video of construction on Highway 99. The video shows crews working through the night to demolish and replace the section of SR 99 that crosses above Broad Street. “We thank commuters for their patience and their help,” said Dave Sowers, WSDOT’s […]
September 3, 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
Construction Equipment
Unstoppable Force, Immovable Object: Seattle’s Big Bertha halted by mystery object
Has Big Bertha met her match? She has, at least for the time being. The world’s largest tunnel-boring machine was recently brought to a halt 60 feet beneath the streets of Seattle, Washington when it hit an unknown object and could move no farther, reported KOMOnews.com. The five-story head of the machine was completely brought […]
December 19, 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
Business
D.C. airport metro station tops list of biggest U.S. infrastructure projects
According to Same Day Steel Deck these are the five highest-profile transportation infrastructure projects in the United States. 1. Dulles Transit Extension in Washington, D.C: This $6.2 billion project began in 2008 and has a target completion date of 2016. It’s purpose is to extend the Washington Metro line to Dulles International Airport and Tyson’s Corner. 2. […]
March 13, 2013
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