When I was there last, ~2 yrs ago or so, I noticed several habitat bridges along the way. They’re pretty interesting to read about. They are essentially designed to reduce the wildlife habitat fragmentation that occurs along with the building of major habitat barriers like autobahns/freeways. There is no accommodation for vehicular or pedestrian traffic on these bridges, they are simply meant to be a wildlife corridor, pretty neat.
Historically though, the Germans designed the layouts of their autobahns to capture scenic views of the landscape. It was yet another manifestation of Nazi ideology. In fact, few Germans even owned automobiles when the autobahns were first built, thus Hitler gave Germany Volkswagen, “The Peoples Car” so all would have access to these magnificent new freeways. All American freeways are built on the same principles as the first autobahns – max 3% grade, overpasses, etc.
Sorry for the history lesson, I could go on and on…
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