Drone’s-eye view of the East Link light rail tunnel portal where work has begun on the new tunnel to run under downtown Bellevue. Trains roll in 2023.
View this complete post...Posts Tagged ‘WA’
Bellevue, WA: Drone’s Eye View of Light Rail Tunnel Portal
Thursday, March 2nd, 2017WSDOT: Building a Highway Underneath Seattle
Tuesday, December 20th, 2016
With a time-lapse camera mounted 54-feet high, you almost get a bird’s-eye view of work inside Seattle’s SR 99 tunnel. As the tunneling machine Bertha builds the tunnel, road crews are right behind – building the foundations, walls and the top deck of the double-deck highway drivers will travel on when the tunnel opens. Take a look.
View this complete post...Washington State DOT: Building the Floating Bridge over Lake Washington
Tuesday, December 6th, 2016
An overview of the reasons why the new SR 520 floating bridge was built on Lake Washington, and some of the solutions the project team developed to efficiently build the world’s longest floating bridge. The project won a 2016 Excellence in Design (Engineering) Award from the Design-Build Institute of America.
View this complete post...Washington State DOT: How ATDM Works
Thursday, August 4th, 2016
The ATDM overhead active traffic and demand management signs will display speed limits, lane status or variable messages so driver know what’s happening ahead.
View this complete post...Seattle, WA: Workers Inside the SR 99 Tunneling Machine
Tuesday, July 5th, 2016
This video was provided by Ballard Marine Construction, the firm in charge of managing and performing hyperbaric work on the SR 99 Tunnel Project in Seattle. It shows crews at work behind the SR 99 tunneling machine’s cutterhead during a planned maintenance stop in spring 2016. To stabilize soil and water that would otherwise flow through openings in the cutterhead, crews must pump compressed air into their work space at the front end of the machine.
View this complete post...Puyallup, WA: The Historic Meridian Street Bridge
Monday, June 20th, 2016
For more than eight decades the Meridian Street Bridge over the Puyallup River has served as a portal for cities along the Puget Sound to community of Puyallup, Washington. Significant for its design, it is the only one of its kind in Washington, and may very well be unique in the United States, if not the world.
View this complete post...Seattle, WA: Tunneling Under the Alaskan Way Viaduct
Tuesday, May 10th, 2016
After nearly a week of tunneling under the Alaskan Way Viaduct, crews are steadily continuing Bertha’s underground drive towards downtown Seattle. This video gives you a behind-the-scenes glimpse into how the new tunnel is being built, showcasing the complex operations involved in this project. Massive concrete ring segments are transported to Bertha’s segment erector where they are lifted into place, allowing the machine to push forward while the excavated soil is transported along a network of conveyer belts and into a barge moored at Elliott Bay’s Pier 46.
View this complete post...Washington State DOT: First Drive on the SR 520 Floating Bridge
Thursday, April 14th, 2016
At 3:50 a.m. on April 11, 2016, WSDOT Incident Response Team drivers completed the maiden voyage across the new SR 520 floating bridge. The westbound lanes on the new bridge are now open to all drivers. Eastbound lanes will switch to the new bridge during the weekend of April 22-25.
View this complete post...Rewiring the Northwest’s Energy Infrastructure
Tuesday, February 23rd, 2016
THE EVERGREEN STATE COLLEGE
CENTER FOR SUSTAINABLE INFRASTRUCTURE
Rewiring the Northwest’s Energy Infrastructure paints a picture of an integrated energy system in Oregon and Washington that, by 2040, is among the most sustainable and resilient in the world. At the same time, that 2040 energy system will be beneficial and affordable to the people that will pay for it: rich, middle-class, and lower-income people alike, as well as institutions, communities, and businesses big and small.
Bremerton, WA: The Manette Bridge Documentary
Tuesday, February 2nd, 2016
By the summer of 2010 in Manette, Washington, the people of this quiet community by the water had learned that soon they would have to say goodbye to an old friend–a friend that had been with them for 80 years and had served their community year-in and year-out; a strong, faithful companion who, now ravaged by time and the elements, would be unable to continue. That friend was simply known as the Manette Bridge.
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