A bear uses the Parleys Canyon wildlife overpass to cross I-80. Photo: Screenshot from Utah Department of Natural Resources

PARK CITY, Utah — Deer, moose, and other wildlife are safely trotting over I-80 thanks to the Parleys Canyon overpass, and a new Utah State University study confirms it’s saving both animal lives and taxpayer dollars. A 2019 study estimated such collisions cost Utah taxpayers nearly $138 million annually in human injuries, fatalities, and vehicle damage. A new study from Utah State University estimates that the Parley’s Canyon bridge will provide a $15 million cost benefit over its lifetime.

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According to the USU study, the overpass has been highly effective in helping animals safely navigate this critical migration corridor. Researchers found that 97 percent of mule deer and 100 percent of moose that approached the bridge successfully crossed to the other side. Since its construction, wildlife-vehicle collisions in the area have dropped by as much as 77 percent.

The success of the Parleys Canyon overpass has made it a model for future projects aimed at protecting wildlife and motorists alike. The data could help guide similar efforts across Utah’s busy roadways.