The first wildlife crossings were constructed in France during the 1950s.  European countries including the Netherlands, Switzerland, Germany and France have been using various crossing structures to reduce the conflict between wildlife and roads for several decades and use a variety of overpasses and underpasses to protect and re-establish wildlife such as: amphibians, badgers, ungulates, invertebrates, and other small mammals.

A number of studies have been conducted to determine the effectiveness of wildlife corridors at providing habitat connectivity (by providing viable migration corridors) and reducing wildlife-vehicle collisions.Koalas next 20k

Effectiveness of fauna structures are predominantly site specific.   This is due to differences in location, fauna structure, species, habitat etc. but fauna crossings appear to have been beneficial to a number of species throughout different locations around Australia.

A habitat corridor, wildlife corridor or green corridor is best described as an area of habitat connecting wildlife species which have been separated by human activities (e.g. roads, development of structures, logging) and/or fires, disease or floods.    What corridors (fauna crossings) do is help to re-establish wildlife species that have been either reduced, or eliminated, due to these events.  Habitat fragmentation due to human development is an ever-increasing threat to biodiversity and habitat corridors are a possible mitigation.Cardwell Box Rope Fauna Crossingfauna Crossing Graftan 014