These are the most interesting and successful man-made structures ever! The Parks people up here were concerned about the numbers of large mammals that were being struck by vehicles on the highways that cross the parks. These animals include grizzlies, elk, deer, moose, as well as many smaller animals like lynx and wolverine. After much discussion, the road contractors agreed to a demand from the Parks people that they build wildlife overcrossings as well as undercrossings to see if this would alleviate these accidents. (Obviously, in some cases, people were being hurt too in these accidents and cars were mightily damaged.) So this is a photo of one of these magnificent overcrossings. They installed motion-sensitive cameras on these and have recorded over 100,000 crossings by all the above-mentioned animals since the overcrossings were first built in 1996. That sounds like a pretty successful effort, if you ask me!
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