Wallace Annenberg Wildlife Crossing: Designing Bridges for Wildlife and Connectivity

Grady Hillhouse visits the Wallace Annenberg Wildlife Crossing outside Los Angeles, a massive overpass planned to be the largest wildlife crossing on the planet. The video explains the crossing's scale, cost, and the federal funding backing similar projects, and it dives into the engineering and ecological ideas behind getting animals safely across highways. It covers site selection, fencing, underpasses, overpasses, and the four crossing styles described by road ecologists, plus real-world examples like Banff, the Netherlands eco-ducts, and the Tobin Land Bridge in San Antonio. The takeaway is that thoughtful infrastructure can reduce wildlife mortality, restore habitat connectivity, and shape the future of road design.