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SR 99 tunnel project

Demolition set to begin on Seattle’s Alaskan Way Viaduct — watch it fall with web cams and more

The Seattle snowpocalypse may have slightly delayed the start of the demolition of the now-closed Alaskan Way Viaduct, but there’s… Read More

SR 99 tunnel

Watch: Seattle tunnel’s high-tech ventilation system designed to keep air fresh deep below ground

There may not be a breeze coming off Elliott Bay the way there is during a drive along the elevated… Read More

SR 99 Tunnel

From $1 to $2.25 — state seeks public input on proposed toll rates inside Seattle’s new tunnel

Traffic isn’t flowing through the new SR 99 tunnel beneath Seattle yet, but options for how much money flows out… Read More

Seattle tunnel

‘One of the smartest tunnels ever built’: New video explains how tech will help keep Seattle drivers safe

Leave it to a high-tech city above ground to build a high-tech roadway underground. Seattle’s SR 99 tunnel project has… Read More

This was the pits: Time-lapse video shows highway fill in hole where Seattle tunnel machine ended

The seven-story-deep receiving pit where Bertha the SR 99 tunneling machine ended her years-long run has been transformed in just… Read More

SR 99 tunnel

Watch: New time-lapse video shows lower roadway being pieced together in Seattle tunnel

The road untraveled is starting to look like an actual road. Deep beneath Seattle, the SR 99 tunnel project continues… Read More

Seattle tunnel

Deep beneath Seattle, our first end-to-end trip in new tunnel shows massive scale of highway project

More than a year before the new State Route 99 tunnel is scheduled to open to vehicles in Seattle, I… Read More

SR 99 tunnel

New drone video takes viewers through 2 miles of Seattle tunnel, from Space Needle to stadiums

Months after Bertha the Seattle tunnel machine stopped churning beneath the city, work continues on the SR 99 tunnel that… Read More

Bertha

Bertha be gone: Time-lapse video shows summer-long dismantling of Seattle tunnel machine

Bye bye, Bertha. The Seattle tunnel machine, which carved its way beneath the city to make way for a new… Read More

Bertha disassembly

Watch: As disassembly continues, time-lapse video gives look inside Bertha the Seattle tunnel machine

Seven weeks of nearly non-stop work are taking a toll on Bertha. The SR 99 tunneling machine, which cut a… Read More

Three numbers explain why the tech boom doesn’t make Seattle’s new tunnel a good investment

Seattle’s new Alaskan Way tunnel — currently three years late and millions of dollars over budget — has been called… Read More

Watch: Bertha the Seattle tunnel machine goes under the torch as huge pieces are cut, lifted away

Over the years, Bertha the tunnel machine managed to successfully cut her way beneath Seattle and make room for a new SR 99 highway… Read More

Bertha

Drone video captures closer look at Bertha as tunnel machine chews its way to daylight

Update: WSDOT released a new drone video on Thursday (above) with additional footage and sound to replace the previous video.… Read More

Bertha

Watch Bertha, the world’s largest tunnel boring machine, emerge from beneath Seattle

From the dark depths beneath Seattle, Bertha the SR 99 tunnel machine headed out of the muck and into daylight on… Read More

Bertha

Bertha’s big breakthrough is here: Seattle tunnel machine will emerge Tuesday after long journey

After mining through more than 9,000 feet of Seattle underground, and rebounding from a lengthy breakdown and repair, Bertha the… Read More

Bertha

Seattle tunnel machine Bertha is just days from breaking through to complete long journey

If you’ve forgotten what Bertha, the SR 99 tunneling machine, looks like after all these years, get ready to see… Read More

New 360 video shows tunnel machine Bertha at work beneath Seattle as it enters the home stretch

A 360-degree video shot inside the tunnel being built beneath Seattle gives viewers a unique new perspective of what it’s like… Read More

SR 99 tunnel rings

‘We’re in a good rhythm,’ Seattle tunnel worker says, as new videos show Bertha’s progress

It’s been a busy week deep beneath Seattle, as Bertha the tunneling machine keeps on trucking through Belltown. Two new… Read More

SR 99 project

‘Flexible’ bridge being built in Seattle is designed to bounce back from big earthquake

The potential collapse of the Alaskan Way Viaduct during a major Seattle earthquake is one of the main reasons why… Read More

SR 99 tunnel

Bertha passes 1-mile mark: Video shows how Seattle’s tunnel machine is steered beneath city

Spinning and pushing its way beneath Seattle, Bertha the SR 99 tunneling machine moved past the 5,280-foot mark on Thursday… Read More

Tunnel pit

Seattle tunnel machine Bertha reaches halfway point — here’s a rare look inside the massive project

The SR 99 tunneling machine has passed the halfway point on its long journey beneath Seattle, and officials stood 10 stories… Read More

New photos: Panorama of Seattle’s north tunnel entrance shows off transformed corridor

If you’ve lost track of how long Bertha, the SR 99 tunneling machine has been underground (mostly) working on Seattle’s… Read More

Tunnel rings

Video: Watch how they made the 14,260 concrete segments for the Seattle tunnel’s outer wall

The double-decker highway that will eventually run beneath Seattle will sit inside a concrete tube that is as tall as… Read More

SR 99 tunnel

Video: How a double-deck highway is built inside the Seattle tunnel — with enough concrete for 9 football stadiums

Seattleites caught up in the twists and turns and starts and stops of Bertha, the SR 99 tunneling machine, might lose… Read More

Tunnel workers

Video: Amazing look at the dark, dirty and difficult work of changing Seattle tunnel machine’s cutting tools

Next time I think about requesting a stand-up desk or I ask for the air conditioning to be adjusted near my desk, I’m… Read More

Hyperbaric chamber

Under pressure: Seattle tunnel contractors show what it takes to work safely on Bertha

High above the spot where Bertha, the SR 99 tunnel machine, sits idle during a scheduled maintenance stop, workers with Seattle… Read More

SR 99 Tunnel

Seattle’s tunnel machine Bertha reaches pit stop; workers face hyperbaric challenge 120 feet down

Bertha, the SR 99 tunneling machine, is nearly a third of the way along its path to create a new… Read More

SR 99 tunnel

New photos: With viaduct in rear view, Bertha begins tunneling under downtown Seattle

Since getting beyond the delicate work of crossing beneath the Alaskan Way Viaduct in May, Bertha the SR 99 tunneling machine has… Read More

Alaskan Way Viaduct

Seattle’s Alaskan Way Viaduct reopening a week early as roadway and ground stand up to Bertha

Seattle-area drivers will regain access to the Alaskan Way Viaduct in time for the Monday morning commute as Bertha the… Read More

Death Star Viaduct

‘Death Star Viaduct’ shows Luke Skywalker delivering fatal blast to Seattle’s waterfront roadway

A new drone video wowed us a couple days ago because it was shot inside Seattle’s under-construction SR 99 tunnel. But an… Read More

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