Colorado’s Largest Wildlife Overpass Has Cut Animal-Vehicle Collisions by 91%
Before North America’s largest wildlife overpass was built on a stretch of highway between Denver and Colorado Springs, an animal was hit by a vehicle almost every day. But in the 10 months since the overpass opened across Interstate 25 between Larkspur and Monument, just two animals have been struck—that’s a 91% drop. The Colorado Department of Transportation completed the 209-by-200-foot bridge—called the I-25 Greenland Wildlife Overpass—in December 2025.











































































