By April of 2015, the contractor for Arizona DOT’s US 89 Landslide Stabilization project will have move over 1 million cubic yards of material to build a massive stabilizing berm. They are using CAT 773 haul trucks to move material, equipment more commonly seen in mining applications. Check out the video!
A massive landslide in the little town of Nachterstedt in Eastern Germany early on Saturday morning local time caused two houses to vanish into a nearby lake. Three people are believed to have been in the buildings at the time of the slide. Rescue efforts are still on going and had to be halted during the night but were resumed the next morning. Helicopters with infrared cameras and dogs were used to find the missing people, but with no success so far. Approximately 60 residents of nearby buildings had to be evacuated and put up in emergency shelters. (Photo by Spiegel Online) [Editor] More after the break. [/Editor]
On September 17, CALTRANS and Kiewit Pacific held a "tunnel excavation celebration" to kick off the start of tunnel construction on The Devil’s Slide Tunnels project on California State Route 1 (the Pacific Coast Highway) in San Mateo County between the town of Montara to the south and the city of Pacifica to the north. The project involves the creation of a separated two-lane road, one lane in each direction. This road will pass through twin tunnels, over twin bridges and connect with an existing non-separated two-lane road at each end. The new road will be approximately 6,500 feet long, made up of the roughly 4,000-foot twin tunnels, the 1,500-foot north approach road (which includes the 1000-foot parallel bridges), and the 1,000-foot south approach road. Upon completion, the new road will bypass geologically unstable portions of existing Route 1, sections of roadway subject to lengthy closures, high maintenance costs over the years, and risk of permanent failure. Thanks Geology.com for the heads up. [Read on for more background, photos, maps, and movies!] (Images by CALTRANS)
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)