Watch: Mule deer use wildlife underpass in Wyoming

Deer crossing roads can be a danger to cars, people and themselves. Deer crossing roads can be a danger to cars, people and themselves. ©Don DeBold

Mule deer (Odocoileus hemionus) are making use of a new underpass designed to reduce the danger of wildlife strikes in Sublette County, Wyo. The Wyoming Department of Transportation built two overpasses and six underpasses on a 12-mile section of road on a highway west of Pinedale to give safe passage to pronghorn (Antilocapra americana), deer and other animals. According to a wildlife biologist Hall Sawyer in a Wyoming PBS documentary, the highway lies in the middles of a “migration bottleneck.” But wildlife collisions on the road have declined by more than 80% since the bridges and underpasses were built three years ago.