I ran a really lovely 1/2 marathon course today along the banks of Lake Hodges. The course took us over a stress-ribbon bridge, the longest of its kind in the world according to Wikipedia. The design was chosen for having the least environmental impact on the reservoir. Had I known about the significance of the bridge, I would have taken a picture of it.
All that really concerned me at the time was that temps were in the 50s, the course was relatively flat, Swedish fish were offered at aid stations, and there was free beer at the end.