Wildlife Road Crossing Infrastructure: Protecting Animal Movement and Lives

Wildlife crossings enable safe animal movement across road barriers, reducing mortality and supporting population connectivity essential for welfare and conservation.

Key Facts

Road mortality is a leading cause of wildlife death globally, affecting millions of animals across hundreds of species annually.
Wildlife crossings including underpasses, overpasses, and culverts enable animals to cross roads safely.
Banff National Park wildlife crossing system has reduced large mammal road mortality by over 80 percent.
Species-specific crossing design matters: carnivores prefer dark narrow underpasses while ungulates prefer open overpasses.
Fencing combined with crossings channels animals to safe crossing points rather than attempting road crossing elsewhere.
Urban wildlife connectivity through culverts and tunnels enables movement of smaller species in suburban landscapes.
Economic analysis shows wildlife crossing systems provide positive returns through reduced vehicle accident costs alone.

Welfare Considerations

Road mortality causes enormous wildlife welfare harm: animals struck by vehicles experience traumatic injury and death, while survivors of near-miss experiences may develop chronic fear of road areas that limits ranging behaviour. Wildlife crossings address both acute mortality and the cumulative population fragmentation that reduces genetic diversity and resilience. The Banff crossing success demonstrates that engineering solutions combined with appropriate fencing can dramatically reduce both welfare harm and the ecological damage from fragmented populations. The economic case for wildlife crossings through vehicle accident reduction is strong independently of wildlife welfare considerations, creating political pathways for funding that do not require animal welfare advocacy alone.

What You Can Do

Support organisations campaigning for wildlife crossing inclusion in road construction and upgrade projects.
Reduce driving speed in known wildlife crossing areas and dawn and dusk periods of peak animal movement.
Advocate for wildlife corridor and crossing inclusion in environmental impact assessments for new road projects.
Donate to wildlife crossing research and implementation projects in regions with high road mortality.
Engage local government about crossing installation on roads with documented wildlife mortality hotspots.