John Hennessy III,
P.E.
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...
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...
Raw footage of crews installing one of the 73 intersecting piles that will enclose the 120-foot-deep pit that will allow crews to access and repair Bertha, the SR 99 tunneling machine.
View this complete post...
This video shows a short clip of a worker replacing a cutting tool inside the SR 99 tunneling machine in January 2014. Crews working for Seattle Tunnel Partners (STP), WSDOT’s contractor for the SR 99 Tunnel Project, changed a number of tools during 158 hours of recent inspections performed under hyperbaric conditions. Tunneling experts now believe that the clogs and other factors contributed to the stoppage of tunneling on Dec. 6, 2013. As the project’s design-build contractor, it is STP’s responsibility to determine the best and most expedient way to resume tunneling.
View this complete post...
Infrastructure improvements and maintenance require investment, planning, manpower and GIANT MACHINES.
View this complete post...    |
Follow InfrastructureUSA
Video, stills and tales. Share images of the Infra in your community that demands attention. Post your ideas about national Infra issues. Go ahead. Show Us Your Infra! Upload and instantly share your message.
Is the administration moving fast enough on Infra issues? Are Americans prepared to pay more taxes for repairs? Should job creation be the guiding determination? Vote now!
What do the experts think? This is where the nation's public policy organizations, trade associations and think tanks weigh in with analysis on Infra issues. Tell them what you think. Ask questions. Share a different view.
The Infra Blog offers cutting edge perspective on a broad spectrum of Infra topics. Frequent updates and provocative posts highlight hot button topics -- essential ingredients of a national Infra dialogue.
It is encouraging to finally see clear signs of federal action to support a comprehensive US infrastructure investment plan.
Now more than ever, our advocacy is needed to keep stakeholders informed and connected, and to hold politicians to their promises to finally fix our nation’s ailing infrastructure.
We have already engaged nearly 280,000 users, and hoping to add many more as interest continues to grow.
We require your support in order to rise to this occasion, to make the most of this opportunity. Please consider making a tax-deductible donation to InfrastructureUSA.org.
Steve Anderson
Managing Director
SteveAnderson@InfrastructureUSA.org
917-940-7125
RSS Feed
© InfrastructureUSA | Terms of Use | Site developed by Andigo New Media
InfrastructureUSA.org is a nonprofit project fiscally sponsored by FJC, a Foundation of Philanthropic Funds.