On the Big Sur coatline, the Pitkins Curve area of California Highway 1 (the PCH) is undergoing some improvements to help alleviate landslides and roadway instability. National Driller magazine reports on the project in their January 2011 issue. The $29.4 million project involves building a bridge in some challenging terrain to eliminate the Pitkins Curve and building a rock shed at Rainrocks. Golden State Bridge, Inc. is using pipe piles drilled into rock to support a temporary trestle. Permanent bridge foundations are 60-in diameter drilled shafts about 68-feet deep. The pile cap will be post-tensioned onto the shafts. The 240-ft center span will be built by cantilevering out from each end with a closure pour for completion. [Source: National Driller. Image: National Driller]
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Devil’s Slide Breakthrough Video and Links
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.