
Terrapin crossing sign and cutouts for turtles to safely cross under road in St. Simon’s, Georgia, where female turtles make the treacherous journey to higher ground to lay their eggs.
Photo credit: Bubba73 (Jud McCranie) [CC BY-SA 4.0], via Wikimedia Commons
cWildlife crossing effectiveness is proven—here’s how animals learn to use them
Once you start talking wildlife bridges with people who aren’t familiar with them, you often hear in jest, “Oh right, so the animals can read signs and understand where they’re supposed to cross now?!”

Oregon mule deer caught on to using wildlife underpass right away
Wildlife bridges work—but it can take time
Which animals prefer which types of wildlife crossings

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