Wallis Annenberg Wildlife Crossing Hits Key Construction Milestone

Crews have begun placing soil on the world's largest wildlife crossing, advancing efforts to reconnect habitats over California's 101 Freeway.

The Wallis Annenberg Wildlife Crossing, spanning 10 lanes of the 101 Freeway in Agoura Hills, will be the largest wildlife bridge in the world upon completion in 2026.
On March 31, 2025, workers began laying 6,000 cubic yards of specially designed soil, marking the near completion of Stage 1 of the project.
The crossing will feature native vegetation, including 50,000 plants and 12 acres of restored open space, to create a sustainable habitat for mountain lions, bobcats, deer, and other species.
This $92-million project, funded by state and private contributions, aims to address habitat fragmentation and genetic isolation among wildlife in the Santa Monica Mountains.
Once completed, the crossing is expected to serve as a global model for urban wildlife conservation and ecological connectivity.