Colorado is building the ‘world’s largest’ wildlife overpass
Colorado is building one of the world’s largest wildlife overpasses across Interstate 25 between Denver and Colorado Springs. The $15 million Greenland Wildlife Overpass will be 200 feet wide and 209 feet long, giving elk, mule deer, and pronghorn a safe route across six lanes of highway. Designed with natural vegetation and sloped entrances, the structure is expected to cut vehicle-animal collisions by up to 90% while reconnecting 39,000 acres of habitat to Pike National Forest. Scheduled for completion in late 2025, the project shows how infrastructure can reduce accidents and restore ecological connectivity.









