The largest wildlife overpass in the world will allow elk, mule deer, black bears, mountain lions and other animals to safely cross over six lanes of traffic.
11:57, 23 Dec 2025Updated 12:02, 23 Dec 2025
World’s largest wildlife bridge opens over busy, remote road after £11million project(Image: Colorado Department of Transportation)
The largest wildlife overpass in the world has been unveiled in Colorado, North America, following a whopping $15million (£11million) project. The Greenland overpass crosses the Interstate 25, a remote yet bustling road located between Denver and Colorado Springs.
This impressive crossing links up 39,000 acres of wildlife habitats, providing a safe passage for elk, mule deer, black bears, mountain lions and other animals to cross six lanes of traffic. The bridge is designed to significantly cut down on animal-related accidents.
It’s reported that around 100,000 vehicles drive through this isolated area daily, according to Colorado transportation officials.
Boasting the title of the largest bridge structure built specifically for wildlife, the overpass measures 200 feet wide and 209 feet long.
Shoshana Lew, the Executive Director of the Colorado Department of Transportation, stated: “The I-25 Greenland wildlife overpass is critical to the safety of both wildlife and motorists.
“The overpass is an essential component of the wildlife crossing system in this area, which is expected to reduce wildlife-vehicle crashes by 90%.”
The Arizona Game and Fish Department explained that animals will instinctively know how to use the wildlife crossing thanks to “exclusionary fencing”.
“This is a strip of tall fencing that stops animals trying to cross the road and guides them to the overpass instead.
“Data collection from similar projects here in Arizona has shown that once animals learn to use the wildlife crossing, they pass that knowledge down to the next generation.”
World’s largest wildlife bridge opens over busy, remote road after £11million project(Image: Colorado Department of Transportation)