A huge 35,000 to 40,000 cubic yard landslide has blocked Highway 26/89 for about 300 feet with material about 40 feet high. The slide is about 2000 feet long, terminating in the Snake River. It is still moving about 1 foot per day. Plans are in place to begin clearing the material, but WYDOT does not want to start until the risk of more material coming down has subsided. [Source: Jackson Hole News&Guide via USGS Landslide Events]
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Video: Rockslide on U.S. Highway 64 in Tennessee
Amazing video of a rockslide as it happened yesterday along U.S. Highway 64 in the Ocoee River gorge in Tennessee. TDOT crews had almost finished removing rockslide debris from an event earlier in the day when a second slide occurred, blocking the road again. That looks like a pretty planar joint set dipping right into the roadway and everything was wet from the recent rains. Click through for the video.
SR 87 Landslide Presentation at Roads and Streets Conference
Last week was the annual American Council of Engineering Companies of Arizona Roads and Streets Conference in my home town of Tucson, Arizona. Its a transportation themed conference as you might guess, but there are usually a few geotechnical-type presentations. This year, there was an excellent presentation on the SR 87 Landslide that occurred about 1-year ago on the highway between Phoenix and Payson. The presentation was given by Keith Dhalen, PE with AECOM , Wayne Harrison, RG also with AECOM and Scott Neely, PE with Terracon . Read on for my recap of the presentation. (Photo by ADOT via AZGS)