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Tag: Seattle construction
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
Safety
Worker dies following fall into water-filled trench near Seattle
A construction worker died last week near Seattle after suffering a fall into a trench likely caused by a medical emergency. According to a report from KCPQ TV, the unidentified worker was found August 28 face down at the bottom of a 10-foot trench with about two feet of water on a jobsite in Bellevue. […]
September 8, 2015
Roadbuilding
Board rules WSDOT should have given contractor more warning about pipe struck by Big Bertha before stall
In regard to the drilling of the new State Route 99 tunnel below Seattle, the Washington State Department of Transportation (WSDOT) has few friends left. There remains disagreement between the department and the city of Seattle over who will pay to repair a water main damaged during the excavation of a repair pit for Big Bertha, […]
May 12, 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
Barrier rolls from overpass during construction, kills young couple, infant son in Washington
A construction project to install a sidewalk along an overpass in Washington turned tragic Monday morning when a piece of the span fell atop a pickup traveling beneath. According to a report from the Seattle Times, Josh and Vanessa Ellis and their 8-month-old son Hudson were inside the truck and killed in the accident, which […]
April 15, 2015
Roadbuilding
Water main damaged by Big Bertha repair excavation could cost WSDOT $4 million
Four months after crews temporarily stopped excavation on a repair pit for the world’s largest tunnel-boring machine due to ground sinkage, Seattle officials have now identified a major repair needed on a water main damaged by the sinking. Back in December, excavation stopped on the repair pit through which Big Bertha’s massive cutterhead was recently lifted as officials suspected groundwater pumping […]
April 14, 2015
Roadbuilding
PHOTOS: Big Bertha’s 2,000-ton front end lifted to the surface. How the world’s largest tunneler was raised
[imagebrowser id=225] After a year of slumber and almost a month after chewing her way into a 12-story repair pit, Big Bertha, the world’s largest tunnel-boring machine, is finally under repair in Seattle. Crews worked for the better part of March to disassemble the machine’s front end before lifting the machine’s cutterhead and body shield panels—a […]
April 1, 2015
Roadbuilding
Crane sends pipe careening into Seattle bus on Highway 520 bridge followed by a crashing traffic sign
Eight passengers on a bus traveling across the Highway 520 in Seattle were hospitalized Tuesday night after a construction accident resulted in a traffic sign toppling atop the bus. According to a report from the Seattle Times, Washington State Department of Transportation and Washington State Patrol officials said a crane lifting pipe as part of the Highway […]
March 19, 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
PHOTOS: Fixing Bertha: How workers dug a 12-story pit to raise world’s largest tunnel boring machine from the dead
No. 8 Story in 2015 « No. 9 No. 7 »  [imagebrowser id=194] The Big Bertha saga recently received a major update: crews with lead contractor Seattle Tunnel Partners have finished digging the 120-foot pit that will be used to access the world’s largest tunnel boring machine for necessary repairs. Now that the pit […]
February 11, 2015
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