How do wildlife know to use animal bridges and crossings

Do animals really use those bridges to cross roads and highways? And how do they work to keep people and wildlife safe?

Blog: Helping animals get safely across highways - Redwood City Pulse

Animals are Crossing: Who's Helping Wildlife Cross Roadways, and What New Federal Funding Could Mean - Grizzly bear conservation and protection

How effective are wildlife crossings?

Animal Crossings Are Helping Reduce Road Kill, CDOT Says

Montana State University releases reports on wildlife crossing structures

Animal overpasses save Bambis … and Benjamins

How wildlife bridges over highways make animals—and people—safer

Animals Are Using Utah's Largest Wildlife Overpass Earlier Than Expected, Smart News

The Largest Wildlife Bridge in the U.S. Opens in San Antonio - Route Fifty