While developing artificial means to help wildlife do what they need to do has been a thing for a while (see fish ladders in dams), there are two current projects that strike me as something new.
In Oslo work is underway for a ‘bee highway.’ It’s not an actual road in the sky for the exclusive use of bees. It’s a series of rooftops with flowers and the bee equivalent of rest stops. The project is a collaboration between state bodies, local homeowners and companies, and you can track its progress online (you’ll need a translator or a working knowledge of Norwegian).
In the State of Washington work has been proceeding on helping wildlife cross a section of Interstate-90 in the Snoqualmie Pass region. Earlier this month the state’s Department of Transportation started work on a wildlife overpass along a natural migration route to Keechelus Lake (The Interstate follows the northeast side of the lake). Large fences along the highway near the overpass should help nudge bear, deer, elk and other fauna over the highway and on to the lake. The overpass should complement the wildlife underpasses already being used in the vicinity and make it easier for migration and a broader genetic exchange. Think of it as analogous to the parks being developed along unused elevated train tracks, if those parks were over major highways or surface streets.
The projects are not solely for the benefit of wildlife. The crossings will cut down on more traditional surface crossings of Interstate-90 and the associated destruction. This also facilitates a widening of the Interstate. The overpass should be ready for nature traffic in 2019.