Colorado’s new wildlife overpass crossing I-25 is among the world’s largest animal-crossing structures over a major highway. Spanning six lanes of interstate traffic, it seamlessly connects 39,000 acres of habitat on either side. This gradually sloped, 200-by-209-foot bridge is expertly designed to encourage the larger wildlife to use it.

Unlike tunnels, which big game animals avoid due to restricted mobility and antler clearance, this open structure offers clear sight lines. The project aims to link wildlife corridors and to preserve open spaces near water in an area known for high movement of large game such as elk, mule deer and pronghorn antelope. Studies predict a 90 percent reduction in wildlife-vehicle crashes, where there was once an average of one collision per day. The $15 million multi-agency project marks a bold step in wildlife conservation, balancing transportation needs with ecosystem health and ensuring the safety of both motorists and wildlife.