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SR 99 tunnel
VIDEO: 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, ...
VIDEO: A 360-degree view inside Bertha and construction of the SR 99 tunnel
The Washington State Department of Transportation (WSDOT) has created a video featuring 360-degree views inside the SR 99 tunnel ...
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 ...
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 ...
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Connected Keypad Adds Security to Job Sites
Ask anyone in the construction business how confident they feel leaving their equipment on job sites, and you’ll probably get…
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 ...
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 ...
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 ...
PHOTOS: Big Bertha’s 2,000-ton front end lifted to the surface. How the world’s largest tunneler was raised
After a year of slumber and almost a month after chewing her way into a 12-story repair pit, Big Bertha, ...
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 » The Big Bertha saga recently received a major update: ...
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 ...
Repairs to Big Bertha will include 86 tons of steel reinforcement to tunnel-boring machine’s bearing, cutter drive
The largest tunnel-boring machine in the world needs a bit of reinforcement against the "wet and abrasive soils" deep ...
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 ...
Cummins developing fully-electric powertrain: “We are not just a diesel company”
U.S.-made, Cat-powered Monterra 4×4/6×6 cabovers are reset Army trucks aimed at construction
ELD Mandate: As contractors scramble to comply with electronic logging, others may be in for “rude awakening”
Ryobi cooler doubles as a portable air conditioner
VIDEO: Excavator tag team lifts people to safety across flooding river
Small trench, big disaster
GO TO SAFETY WATCH
ELD Mandate: As contractors scramble to comply with electronic logging, others ...
by Equipment World Staff
JCB’s 16C-1, 18Z-1 and 19C-1 mini excavators bring new designs, lots ...
by Wayne Grayson
Test Drive: Volvo’s new VNR tractor with 38 tons of concrete ...
by Jason Cannon
Cat tax whistleblower could get IRS reward of $600 million
by Wayne Grayson
The I-85 collapse and the push of Accelerated Bridge Construction techniques ...
by Chris Hill
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