The Virginia Safe Wildlife Corridors Collaborative aims to not only  reduce wildlife-vehicle conflicts, but also to work towards implementing measures that allow the safe movement of wildlife across roads.  Wildlife crossings are one of the most successful ways of doing this.   Wildlife crossings are underpasses or overpasses that allow wildlife to pass unharmed beneath or above a road to access important habitat. This connection also helps prevent the isolation of wildlife populations, which can increase the risk of eventual extirpation or local extinction. Many underpasses function as wildlife crossings even if they weren't designed for that purpose.

One of the objectives of the Virginia Safe Wildlife Corridors Collaborative (VSWCC) is to identify existing underpasses that are or could be used by wildlife and work towards implementing measures to increase their use.  Adding fencing along the roadside and connecting it to an underpass can help guide wildlife to the structure and keep them off the road.  Other measures that make a structure more attractive to wildlife is adding natural substrate along the bottom of the underpass, adding vegetation near the culvert openings, placing rocks or other material in the structure to serve as hiding places, and - for culverts that carry water - adding shelving to allow animals to cross.

Wildlife crossings can vary in size depending on the target species.  There is a great deal of research on wildlife crossing designs that are most successful for particular species.  VSWCC is interested in habitat connectivity measures for all species of wildlife, big and small.

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