For those of you who are surfers and/or live near the San Onofre generating station or Camp Pendleton in southern California, you might be interested that the iconic railroad bridge over the Santa Margarita River (that flows through Camp Pendleton) is being replaced over the next two years. This bridge goes over the trail that leads to the famous "Trestles" beach of quite good surf.
http://www.signonsandiego.com/news/2010/aug/31/replacement-iconic-trestles-bridge-begins-sept-1/
Here is about the same news article, but with a photograph of the trestle itself:
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