How Colorado's Wildlife Mitigation Efforts—Including the Largest Animal Crossing Overpass in North America—Are Making Everyone Safer
Animals can now cross a dangerous stretch of Interstate 25 thanks to new infrastructure, including fences, underpasses and a massive overpass, which has led to a 91 percent reduction in wildlife-vehicle collisions
We haven't written up this one. Smithsonian has the full story — the link below goes straight to it.