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Paw Print Critter Crossings
Linking Habitats and Reducing Roadkill 		Wildlife and Highways: An Overview Tortoise Underpasses Badger Tunnels Four Tools to Assess Wildlife Linkage Areas Programs to Remove Fish Passage Barriers Bear Underpasses Salamander Tunnels Passages for Large Mammals Goat Underpasses Computer Model Highway-Wildlife Relationships Amphibian-Reptile Wall and Culverts An Overpass for Animals and Humans
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Photo of an Underpass
Passages for Large Mammals 29 of 44
Photo of an Underpass
Photo by Tony Clevenger

The park's overpasses and underpasses (like the underpass shown in this aerial view) have cut ungulate roadkill by 96 percent.

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United States Department of Transportation - Federal Highway Administration