Video Courtesy of KSL.com
Project Related
Devil’s Slide Tunnel Update and First Attempts to Tame the Landslide
The Devil’s Slide Tunnel project is on schedule and on budget according to a news story at ABC7News.com from earlier in June. The video (shown after the break) has a few nice shots showing rock bolting, soil nailing at the portals, and the geologic mapping and laser scanning that happens at the tunnel face.
I also came across a very neat article about how the Ocean Shore Railroad Company was the first to try to cut into the slope along what is now PCH 1 at the Devil’s Slide back in the early 1900s. They were trying to connect the then rural farming community of Half-Moon Bay with San Francisco. The railroad fought the reoccurring landslide and serious rockfalls. Ocean Shore Railroad went bankrupt in 1922 and pulled up its rails, making room for the current highway. (Photo at left from halfmoonbaymemories.com)
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Geologic Hazards
Slow Moving Landslide in North Salt Lake City Area
Residents of a neighborhood on the north side of Salt Lake City, Utah received some bad news recently from a state geologist. The slow moving landslide that has been moving on the order of several inches per year has begun moving at a faster rate. They predict movement on the order of feet per year. Several houses have already been condemned and torn down with more likely. Click through for some news footage showing the problem area and some of the damage to house foundations, sidewalks, pipes and other reactions from unfortunate residents. (Photo by KSL, NBC Salt Lake City affiliate)