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Tag: tunnel boring machine
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
WSDOT wins $57.2M suit over Bertha’s breakdowns during Alaskan Way Viaduct project
The Washington State Department of Transportation has won a $57.2 million jury award in its lawsuit over delays in the Alaskan Way Viaduct project due to tunnel boring machine Big Bertha’s breakdown in 2013. The project was delayed for about three years as the contractor team of Seattle Tunnel Partners worked to get Bertha, then […]
December 31, 2019
Roadbuilding
Dallas brings out ‘Big Tex’ boring machine for flood tunnel
The city of Dallas is preparing to build a 5-mile flood-protection tunnel, and “Big Tex” will do the honors. The tunnel boring machine is 220 feet long and was recently assembled and unveiled for the city’s $300 million Mill Creek Drainage Relief Tunnel. Big Tex will bore the first 9,000 feet of the tunnel at […]
December 16, 2019
Roadbuilding
Meet Chessie, the tunnel boring machine that will dig new tunnel under Chesapeake Bay
The new boring machine that will drill the mile-long hole for an expansion of the Chesapeake Bay Bridge-Tunnel (CBBT) has been named Chessie after the fabled sea monster that is said to live in Chesapeake Bay, The Virginian-Pilot reports. The name was chosen from more than 120 names that were submitted by local sixth graders […]
May 2, 2018
Roadbuilding
Last road panel installed in Seattle SR-99 tunnel dug by Bertha
The Washington State Department of Transportation reports that the last of 1,152 road panels have been installed on the new State Route 99 tunnel, which will replace the Alaskan Way Viaduct. The panels form the lower deck of the double-deck highway, which will allow drivers to travel under downtown Seattle as a bypass or stay […]
April 2, 2018
Roadbuilding
Final piece of Bertha removed from Seattle’s SR 99 tunnel
The last piece of Bertha, the world’s largest tunneling machine, has been removed from Seattle’s SR 99 tunnel, marking the end of a four-month disassembly process. The machine finished its boring of the tunnel in early April, work that lasted four years. This breakthrough was roughly three years later than the original projected completion date, […]
August 25, 2017
Roadbuilding
Bertha sees daylight, finishes 1.7-mile boring work for SR 99 tunnel
Sixty-four years after the Alaskan Way Viaduct was first opened to traffic, Bertha, the world’s largest tunnel boring machine, broke through the end of a more than 9,270-foot tunnel for Seattle’s SR 99. “This is a historic moment in our state’s transportation history,” says Washington State Gov. Jay Inslee. “Innovation and perseverance are the engines […]
April 6, 2017
Roadbuilding
As Bertha visits the dentist, a look at how this machine digs and builds the SR99 tunnel at the same time
Bertha, the world’s largest and perhaps most beleaguered tunnel boring machine, has been halted deep below the streets of Seattle once again. But this time the stoppage is for routine maintenance following significant progress. Plus, the stoppage gives us an opportunity to look at an often overshadowed portion of this project: construction of the State Route […]
July 18, 2016
Roadbuilding
Bertha will soon begin digging below the viaduct its path will replace
The world’s largest tunneling machine will soon begin its dig beneath the Alaskan Way Viaduct in Seattle, its first activity since mid-March. In January tunnel-boring machine Bertha broke through its repair wall following two years of down time only to be brought to a halt once again later that month at the order of Washington Gov. […]
April 27, 2016
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
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
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