Colorado overpass cuts wildlife collisions by 91 percent

Colorado officials built a wildlife overpass above a busy interstate highway and observed elk, bears, pronghorn, and northern leopard frogs using it.

The overpass, completed 10 months ago, reduced collisions between vehicles and animals by 91 percent, according to a recent report. The state also installed eight-foot-tall fencing and five large underpasses as part of the system to help animals safely cross the highway.