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With final piece of roadway in place, the SR 99 tunnel begins to take shape
Seattle Curbed   27 March 2018   USA   Seattle  
The southbound deck of the State Route 99 tunnel, pictured in January 2018. Courtey of WSDOT
<p>It&rsquo;s been almost a year since Bertha the tunnel-boring machine completed its job drilling the tunnel that will eventually replace the State Route 99 Viaduct, and in the drill&rsquo;s wake, crews have been busy building a road. Now, that work is largely ...
Filed under: Construction News
First road-legal truck drives length of Highway 99 tunnel
The Seattle Times   02 November 2017   USA   Seattle  
The tunnel is expected to be open in January of 2018
<p>The Highway 99 tunnel construction project moved into a new direction this week. Northbound.<br />The upper, southbound deck is almost finished, which clears enough room beneath for assembly to begin for the lower deck that will carry traffic north from ...
Filed under: Construction News
VIDEO: FLY SEATTLE'S SR 99 TUNNEL
CONSTRUCTION EQUIPMENT   23 October 2017   USA   Seattle  
Fly the SR 99 tunnel_WSDOT
<p>Go two miles in two minutes under downtown Seattle to see the progress on the city's double-decker underground highway.</p> <p>Washington State's DOT does a great job using drones to show off some of its best work. This video captures the ongoing construction ...
Filed under: Construction News
Bertha’s woes grind on: more delay, higher cost for Highway 99 tunnel
The Seattle Times   22 July 2016   USA   Seattle  
The southbound deck of the Highway 99 will be built, here, between two massive walls. This is the view looking north. (Ken Lambert/The Seattle Times)
<p>Bertha&rsquo;s problems will cost Washington state an estimated $223 million in cost overruns, and further delay the Highway 99 opening &mdash; until early 2019.</p> <p>OLYMPIA &mdash; Tunnel-machine Bertha&rsquo;s two-year breakdown will cost Washington ...
Filed under: Construction News
Drone video gives up-close look inside SR 99 tunnel
Q13fox   03 May 2016   USA   Seattle  
bertha_progress_ring17_0503
<p>SEATTLE — Bertha the tunnel-boring machine has now excavated 117 feet of the 385 feet needed before the SR 99 Alaskan Way Viaduct can reopen to traffic.<br>Seattle Tunnel Partners has installed 17 rings since mining started up again on Friday, WSDOT announced ...
Filed under: Construction News
Bertha on schedule to resume tunneling by Christmas
MyNorhtwest   07 December 2015   USA   Seattle  
Seattle Tunnel Partners Project Director Chris Dixon told the Seattle City Council that crews are in the "final stages" of testing the boring machine that is being pieced back together after months of repairs. (WSDOT)
<p>Bertha could resume tunneling before Christmas if work stays on schedule.</p> <p>Seattle Tunnel Partners Project Director Chris Dixon told the Seattle City Council that crews are in the "final stages" of testing the boring machine that is being pieced together ...
Filed under: Construction News
Bertha’s pipe hit blamed on state
The Seattle Times   09 May 2015   USA   Seattle  
Bertha, the Highway 99 tunnel boring machine, sits motionless just over 1,000 feet into its 9,270 foot route to South Lake Union in September. (Steve Ringman / The Seattle Times, 2014)
<p>The state should have done more to warn Seattle Tunnel Partners about a steel pipe that tunnel machine Bertha struck Dec. 3, 2013, three days before the giant drill overheated and stalled, a dispute review board has ruled. The decision isn&rsquo;t binding, ...
Filed under: Construction News
Fund technology to prevent another Oso landslide
The Seattle Times   15 April 2015   USA   Seattle  
Oso landslide
<p>IN the aftermath of last year&rsquo;s lethal Oso landslide, the state Legislature has unanimously authorized an expanded state program to map slide-prone slopes and other geologic hazards. Equally important, the state would make that information more accessible ...
Stuck in Seattle The Aggravating Adventures of a Gigantic Tunnel Drill
Bloomberg Business   08 April 2015   USA   Seattle  
segmental tunnel lining
<p>About 20 workers wearing hard hats and reflective vests clump together on the edge of a chasm near Seattle&rsquo;s waterfront, peering down a hole 120 feet deep and 83 feet wide. The last men have been craned out of the pit in a yellow metal cage. Gulls ...
Filed under: Construction News
Bertha’s mammoth cutter head emerges from tunnel vault
The Seattle Times   31 March 2015   USA   Seattle  
Bertha’s cutting-head assembly, (Ken Lambert/The Seattle Times)
<p>The front of tunnel-boring machine Bertha emerged from its deep access vault late Monday afternoon, after a trouble-free day of crane tests and hoisting. It is now resting on the surface of Seattle’s waterfront.</p>
Filed under: Construction News