Collisions between wildlife and vehicles can cause substantial damage to vehicles and injure – or even kill – people. Wildlife doesn't fare much better. High mortality due to vehicles can affect the viability of some small populations of animals.
Part of the highway construction included three underpasses with fencing running alongside the roadways near each underpass to ‘funnel' the animals through.
During a 13-month period after construction, 2,433 photographs of various animals, primarily deer, but also bears, raccoons, and domestic dogs and cats, were taken as they used the underpasses. Animal deaths from vehicle collisions were counted as well.