Los Angeles

Construction Progresses on Revolutionary Wildlife Crossing Over 101 Freeway in Agoura Hills

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Published on March 31, 2025
Construction Progresses on Revolutionary Wildlife Crossing Over 101 Freeway in Agoura HillsSource: Annenberg Foundation

Agoura Hills is poised to make conservation history with the advancement of the Wallis Annenberg Wildlife Crossing over the 101 Freeway, with landscape construction visibly underway. Drone footage has captured the initial phase of soil placement, signaling the start of the overpass' transformation into a vibrant ecosystem. Pulled from the local Santa Monica Mountain environment, the soil is the foundation upon which about 5,000 native plants will take root, creating a habitat catered to the needs of mountain lions and other indigenous species, NBC Los Angeles reported.

In a statement obtained by CBS News Los Angeles, Beth Pratt of the National Wildlife Federation underscored the urgency of the crossing, stating, "This crossing will save the local mountain lion population from extinction, stand as a global model for urban wildlife conservation – and show us that it's possible for a structure of this magnitude to be built in such a densely populated urban area." The structure was set in motion with 26 million pounds of concrete, the day following a mountain lion was fatally struck on the 405 freeway.

As for the completion, the project, launched on Earth Day 2022, is on the calendar for a 2026 finish. With a nearly 1-acre cap designed to span mighty 10 freeway lanes ensconced in Agoura Hills, the crossing aims to connect the Santa Monica Mountains to adjacent terrain, offering animals a safe passage amidst a treacherous motorway, CBS News Los Angeles detailed.

Next in line, according to a FOX 11 report, is the vegetation phase, where coastal sage scrub species, carefully selected to flourish in the local climate and to diminish the risk of wildfires, will be planted. Overseeing the horticulture is Rock Design Associates, with guidance from multiple conservation entities ensuring the habitat is equipped for fosterage of the intended wildlife.

The Annenberg Foundation-backed wildlife crossing is expected to mitigate genetic isolation and enhance biodiversity for a myriad of creatures.