Colorado wildlife overpass cut vehicle-animal collisions by 91%, report finds

A wildlife overpass for elk, deer, and pronghorn on Interstate 25 between Denver and Colorado Springs. Photograph: UCG/Universal Images Group/Getty Images

Colorado officials have tracked herds of elk, bears, pronghorn and even northern leopard frogs ambling across its new wildlife overpass. According to a newly released report, the overpass, which acts as a bridge over a busy stretch of interstate, has helped cut wildlife-vehicle collisions by 91% since its completion 10 months ago.

The overpass is the centerpiece of a larger system built by the state to assist wildlife crossing the highway, which also includes miles of 8-ft-tall fencing and five large wildlife underpasses.