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bridge devilsslide construction concrete
bridge devilsslide construction concrete
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I had occasion to visit the construction site of the Devils Slide Bypass tunnel, on state route 1 south of Pacifica. The tunnel entrance will be reached by a pair of curved concrete bridges. This is the west bridge, for southbound traffic. The ground below is a working ranch and habitat for various creatures, and the construction was required not to degrade it. So the bridges are cast in place, effectively growing across the valley.
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May 16 2008 02:03 GMT qpidoremix PRO
Like this shot, with the shadow below it...
I've seen the huge machines at work they use to "grow" a bridge like this. Casting the concrete high up there, and when its dry enough, moving the machine on it to cast the next part. quite a sight (a couple years ago they used to grow a very very long railroad track in the netherlands high above the roads, footballfields, rivers, etc...at the time it was the biggest of these machines in the world)
May 17 2008 16:31 GMT dave43
like devils bridge in switzerland? built by the devil for payment of the soul of the first to cross it, so they drove a goat across!