Inside the Devil's Slide tunnel construction, by kxyoung on Flickr
Project Related

Devil’s Slide Tunnel Project Nearly Complete

Inside the Devil's Slide tunnel construction, by kxyoung on FlickrThe Devil’s Slide Tunnel Project was originally scheduled to open at the end of 2012, but it has been delayed slightly to an early 2013 opening. If you look at some recent photos, you can hardly tell that there is anything left to finish. I’ve been following this project since it started, since to me it represents the essence of geoengineering, with important roles played by geotechnical engineers, geological engineers, hydrogeologists, and of course geotechnical contractors and tunneling specialists.  I thought it would be interesting to list a few of the posts I’ve written about the project over the years and present a bit of information I only recently learned.  Click through for more. [Image: kxyoung on Flickr]

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Portals for the Devil's Slide tunnels
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Devil’s Slide tunnels delayed

The Devil’s Slide Tunnels that bypass a landslide prone stretch of California coast will not open until late 2012, a full year later than anticipated according to Caltrans. The tunnels broke through back in October, […]


Road header breaking through at Devil's Slide Tunnel
Project Related

Devil’s Slide Breakthrough Video and Links

Road header breaking through at Devil's Slide Tunnel The “breakthrough” media event for CALTRANS’ Devil’s Slide Tunnel project was this past Friday.  A large crowd of politicians, news crews and locals were on hand as a road-header broke through a shotcrete face in a ceremony to mark the completion of the excavation portion of the first of two tunnels.  It will still be over a year until the tunnels are opened to traffic.  The second tunnel is expected to breakthrough as early as this week. (Photo by SFGate.com)



Caltrans tunnel punch-through from Barry Parr on Vimeo.

The Video came from the Coastsider, the page also has comments from the videographer, Barry Parr, which offer a good perspective on the event.

Click on through for more links etc.

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Inside the Devil's Slide tunnel construction, by kxyoung on Flickr
Project Related

Flickr: kxyoung’s stuff tagged with devilsslide

These are some really fantastic photos of the Devil’s Slide tunnel construction. For those who aren’t familiar, the tunnels will be bypassing a particularly landslide and rockslide-prone portion of the California Coast that is currently […]

Devil's slide repair of PCH 1 using
Geologic Hazards

Devil’s Slide Repair and Tunnel Bypass Presentation

Devil's slide repair of PCH 1 using [Updated Thursday May 29, 2009 – 1:00 PM PDT] Added a photo of the AIS Kaiser S2 excavator (spider excavator), and added photos of the Devil’s Slide debris dump where they have put the landslide material removed and the material from the tunnel excavation. [/Update]

Grant Wilcox, Geology Branch Chief with CALTRANS Office of Geotechnical Design West gave a presentation on the Devil’s Slide repair along PCH Highway 1 at the Southwest Geotechnical Engineer’s Conference on May 12 in Phoenix. I’ve posted about the project here before. When I saw Mr. Wilcox, I knew he looked familiar but I couldn’t figure out why. At the beginning of his presentation he made light of his being on You-Tube…then it clicked! He gave a nice overview of the history of the failures, the geology, and the tunnel project. What follows are a few quick tidbits from his talk based on my notes. (Photo via Caltrans site).

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