This is a great little time lapse video from WSDOT that shows the construction of the tunnel behind the Bertha’s disassembly pit for the Alaska Way Viaduct Replacement Project.
Building the Tunnel Behind Bertha
News
Victorian Rail Tunnel into England’s Longest Cycle Tunnel?
There is a push in Yorkshire, UK to turn the abandoned Queensbury rail line into England’s longest cycle tunnel. The 1.4-mile line was closed in 1956 to rail travel, and as indicated in the photo, […]
Project Related
NYC Subway Tunneling Begins Under Second Avenue, TBM Launched
The new line will serve 200,000 riders per day when it opens in 2017. Total project cost is $4.5 billion. An interesting note regarding the tunnel boring machine itself: The tunnel boring machine was originally […]
Failures
Tunnel Collapse Caught on Video
According to the site Geotechpedia, this tunnel failure occurred on November 29, 2016 around 9am (local time?). The tunnel is located in Yusufeli district of Erzurum in northeastern Turkey. It is somehow related to the […]