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Indonesia to Build Monumental Suspension Bridge in Ring of Fire

Indonesia is planning to build what will be the World’s longest suspension bridge to link up its two main islands of Java and Sumatra. The total length will over 30-km with a (max?) height of 70-m so ships can pass underneath. The catch is that the bridge will be located on the Pacific Ring of Fire, the boundary between the Asian and Australian tectonic plates and one of the most seismically and volcanically active areas in the world. There have been several recent earthquakes greater than magnitude 7, not to mention the earthquake that caused the 2004 tsunami. The bridge will be built to withstand a magnitude 9 earthquake. Oh, and in case the seismic concerns weren’t great enough, the bridge will pass within 50-km of the volcano Krakatoa. The estimated cost of the bridge is $12 billion ($AU?). Credit to Geology.com for the story.

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Hanging Lake Tunnel (Colorado) repair nearly complete

A stretch of tunnel on Eastbound I-70 in scenic Glenwood Canyon Colorado was closed last March because of a 70-foot long crack in the ceiling. Since then the two-lane westbound bore has been handling both eastbound and westbound traffic while repairs to the damaged segment were undertaken. This project has a little of everything: heavy excavation, rockfall, slab reinforcing, geofoam, and even geogrid! Read on for more details, a map and photos. (Photo by Concrete Works Of Colorado)

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Geotechnical Engineering of the new Tacoma Narrows Bridge

When you hear about the Tacoma Narrows Bridge, most people may think of the old Galloping Gertie footage (just for fun, I’ll add some video after the break). Of course the original bridge collapsed in 1940 shortly after opening. A new bridge was completed in 1950, and a second bridge was just opened to traffic on July 15, 2007. Gerard Buechel, the president of Shannon Wilson, examines the geotechnical challenges of constructing this massive bridge in an article post on DJC.com. Imagine constructing a 20-story reinforced concrete building, now imagine constructing it entirely under water! Read on for the link to the article and Galloping Gertie video. (Photo  by frarytd)

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Jefferson Memorial’s Signs of Sinking Raise Fresh Alarms

The National Park Service is carefully monitoring a settlement problem at the Jefferson Memorial in Washington D.C. The geotechnical problem area is a seawall that borders the Memorial’s plaza that seems to be settling away from the plaza. Read on for more info. [Photo by esev]

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BMC Gulf Successfully Completes A Dh12 Million Jumeirah Vehicular Tunnel Waterproofing Project

Dubai, UAE – May 9, 2007: BMC Gulf Trading & Contracting LLC, a subsidiary of Emirates Investment and Development PSC (Emivest), has successfully completed the Dh12 million waterproofing work on the Palm Jumeirah Vehicular Tunnel project. The 1,400m Tunnel Is The Only Link For Vehicles Between Jumeirah Palm Island And Crescent Surrounding It. Read on for more info. (Photo by twocentsworth)

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Three Gorges landslide threat forces villagers to flee

Nearly 100 villagers living upstream from the Three Gorges dam have been forced to leave their homes under threat of a landslide, which officials fear was disturbed during the filling of the dam’s reservoir last year, Xinhua News Agency reported last week. Read on for more info. (Photo by enkai)

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