In an effort to reduce the impact of human development on wildlife habitats and address the increasing problem of wildlife-vehicle collisions, California has launched a groundbreaking project: the Wallis Annenberg Wildlife Crossing. Located over Highway 101 in Los Angeles County, this ambitious initiative aims to be the largest wildlife crossing globally, providing a safe passage for a variety of species moving between the Santa Monica Mountains and the Simi Hills of the Santa Susana mountain range.
Every year, more than one million wildlife-vehicle collisions occur in the United States, leading to 200 human deaths and 26,000 injuries. Recognizing the severity of this issue, the Wallis Annenberg Wildlife Crossing, with a budget of $92 million, offers hope and innovation. Led by a partnership of public and private organizations including Caltrans, the National Park Service, and the National Wildlife Federation, this visionary project seeks to create a secure pathway for numerous wildlife species like mountain lions, bobcats, deer, lizards, coyotes, snakes, and ants.
Since starting construction on Earth Day two years ago, the project has made considerable progress, with the recent installation of the first horizontal section marking a significant step forward. Stretching 210 feet across eight lanes of traffic, the wildlife crossing will facilitate wildlife movement, connecting fragmented habitats. More than 80 concrete girders, weighing between 126 and 140 tons each, will be strategically placed to form the bridge, ensuring resilience and practicality.
Going beyond functionality, the Wallis Annenberg Wildlife Crossing signifies a dedication to ecological renewal and biodiversity conservation. Adorned with over a million native plants and surrounded by abundant vegetation, the crossing will offer a lush sanctuary for wildlife that seamlessly integrates with the natural surroundings. Extensive landscaping efforts covering 12 acres on both sides of the crossing will enhance its natural appeal, providing a welcome retreat for travelers.
This makes me happy finally being able to see the process after MANY years.
The ‘World’s Largest Wildlife Crossing’ Will Help Animals Walk Safely Over Eight Lanes of California Traffic – https://t.co/77G8HMRoMB @smithsonianmag—
Allison Shapiro
Allison Shapiro While the benefits of the crossing extend to various species, wildlife experts are particularly hopeful for mountain lions. Faced with challenges like urban expansion and habitat fragmentation, these magnificent predators are in need of help to overcome genetic diversity issues and health concerns. The Wallis Annenberg Wildlife Crossing brings hope for these iconic animals, providing a path for genetic renewal and long-term survival.
The story of the notable mountain lion, P-22, illustrates the pressing need for interventions like this. Despite his resilience, P-22’s tragic fate highlighted the dangers of isolation and fragmented habitats. His tale spurred widespread backing for the wildlife crossing initiative, emphasizing the vital role infrastructure plays in protecting biodiversity and preventing further harm.
As construction moves forward towards completion in 2025, the Wallis Annenberg Wildlife Crossing serves as a testament to human innovation and environmental care. By promoting a harmonious relationship between humans and wildlife, this visionary project sets the stage for a sustainable future where nature can thrive alongside modern infrastructure.
Image Source: MierCat Photography / Shutterstock
