When they built the new wildlife crossing bridge over I-90, I was wondering how the animals would know to cross there instead of the freeway and amazing video shows the animals doing just that.

According to i90 Wildlife Watch.Org, this is the reasoning behind the project:

While Interstate 90 is a vital east-west transportation corridor in our state, it also bisects a critical north-south wildlife corridor for animals moving throughout the Cascade Mountains. New wildlife crossings between Snoqualmie Pass and Easton help protect motorists from collisions while reconnecting the Cascades for wildlife.

The results are now in and it's really neat to see the overpass in action as deer and other critters cross the bridge safely.