I blogged about a month ago about how 'animal underpasses' in the northwest appear to be working. Someone emailed me this picture of a wildlife bridge so I thought I'd throw it up here too as further testimonial as to how well these underpasses and bridges are working.
This is the turn-off from Banff, Alberta, Canada. The area has a lot of deer, elk and moose and apparently a lot of collisions with wildlife before the animal bridge was built. The animals appear to have figured out the bridge is for them though and reports say a lot of them are using it.