Zoe Denison has a front row seat to the perils of traveling on U.S. Highway 550.

Drivers have crashed through the wildlife fence separating the highway from her home between Billy Creek State Wildlife Area and the Pa-Co-Chu-Puk entrance to Ridgway State Park.

She’s witnessed more than a decade of cars colliding with wildlife and multi-car wrecks.

The same panic surges every time an accident shuts down the narrow, two-lane corridor for hours.

“You’re always thinking, ‘Is it someone I know?’...