The construction of a 20-km tunnel that travels some 6,900-ft below ground has finally restarted after being broken down for several months after being damaged by a rock burst. The Los Olmos tunneling project will […]
The City of Treasure Island, Florida (near Tampa) will be spending around $100k to repair approach embankments to the Isle of Capri and Isle of Palms bridges. …due to the degradation of seawalls and seals […]
The “breakthrough” media event for CALTRANS’ Devil’s Slide Tunnel project was this past Friday. A large crowd of politicians, news crews and locals were on hand as a road-header broke through a shotcrete face in a ceremony to mark the completion of the excavation portion of the first of two tunnels. It will still be over a year until the tunnels are opened to traffic. The second tunnel is expected to breakthrough as early as this week. (Photo by SFGate.com)
Caltrans tunnel punch-through from Barry Parr on Vimeo.
The Video came from the Coastsider, the page also has comments from the videographer, Barry Parr, which offer a good perspective on the event.
Click on through for more links etc.
On September 30, 1935, President Franklin D. Roosevelt dedicated the Hoover Dam, telling the 10,000 people gathered at the ceremony that it was a “great feat of mankind” destined to reshape “the geography of a whole region.” The American Society of Civil Engineers calls it one of the “Seven Modern Civil Engineering Wonders.” In honor of this significant milestone for this fantastic structure, I’ve collected some facts and figures, news articles, information on the bypass bridge, and some concerning news about the future of the dam’s ability to supply power. Click through for more.
Today crews on the Devil’s Slide bypass tunnels will break through after more than 3 years of excavation work. The pair of 4,000-ft long tunnels will each convey Highway 1 past a dangerous and landslide-prone […]
The $2B tunnel project for the replacement of the Alaskan Way Viaduct crossed a major hurdle with the approval of a document that will allow the environmental studies for the project to continue. Mayor McGinn’s […]
Geotechnical firm Treadwell and Rollo has performed the geotechnical investigation for the new San Francisco 49ers NFL Stadium to be constructed in Santa Clara, California. In addition to soil borings, CPT and seismic CPT tests […]
At last month’s Earth Retention Conference, ER2010, there were many references to the second ER conference in 1990. One paper from that proceedings that garnered many mentions and was referenced by several at this year’s […]
In the foundation and basement excavation for the Vehicle Security Center at the World Trade Center cite, an 18th century cargo ship was discovered approximately 20- to 30-ft below street level. It was likely a […]
My colleage Robert Thompson at Dan Brown and Associates has posted about the World Record O-Cell test they were involved in on the new Mississippi River Bridge for I-70 in St. Louis, Missouri. The new […]
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