As cities expand, intentional corridor design in urban planning can dramatically reduce wildlife isolation, vehicle strikes, and population fragmentation.
Urban expansion is the dominant driver of wildlife habitat fragmentation globally. Animals trapped in isolated urban patches face elevated stress from resource competition, inbreeding, and repeated human encounters. Road mortality is a chronic welfare problem for urban wildlife. Corridor design — including green bridges, underpasses, stream corridors, and connected park networks — addresses these welfare harms at population scale. City planners who integrate ecological connectivity produce cities that are better for both wildlife and human mental health.