In October of 2009, a massive landslide in the Nile Valley, near Yakima, Washington, took out a portion of Washington SR 410 and impacted the Naches River as well. This video from WSDOT shows what emergency response was required to get temporary traffic restored on a detour and get a more permanent detour constructed.
Geologic Hazards
Pittsburgh Begins String of Landslide Remediation Projects Totalling $8M
The City of Pittsburgh Pennsylvania has recently started a nearly $1M landslide remediation project on the City’s north side, but it is only one of nearly 20 landslide sites affecting public rights of way being monitored […]
Geologic Hazards
Slope Stabilization Complete at Namestone Point
Regional Roads Victoria (Australia) has announced the completion of slope stabilization work at Namesone Point along the scenic Great Alpine Road in Gippsland. The work was part of $4.3M (AUS) in landslip remediation funding that […]
Geologic Hazards
Devil’s Slide Repair and Tunnel Bypass Presentation
[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).