With an anticipated completion date of late 2025, the world’s largest wildlife overpass is being constructed over I-25 in southern Douglas County near the Greenland interchange between Larkspur and Monument.
Called the Greenland Wildlife Overpass, the project reached the half-way milestone in late July and is a critical component of the overall wildlife crossing system of underpasses and fencing as a part of the I-25 South Gap project, which improved 18 miles of I-25 from Castle Pines to Monument. The completed wildlife crossing network is expected to reduce wildlife / vehicle collisions along that stretch of I-25 by 90%.
This project is one of 19 wildlife crossings the U.S. Department of Transportation has funded nationwide and is a collaboration between the Colorado Department of Transportation, the Federal Highway Administration, Colorado Parks and Wildlife, Douglas County and other partners. It addresses specific needs for elk and pronghorn that move around in the Greenland area depending on the season. Those animals will avoid tunnels and enclosed structures that restrict mobility and cannot accommodate their antlers, preferring to cross open structures that provide clear and open sight lines…