California nears completion of the world’s largest wildlife crossing

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A bridge built for wildlife

Imagine driving down a busy California freeway and passing a bridge that is not meant for cars at all. Instead, it is designed for mountain lions, deer, bobcats, and other wild animals. Near Agoura Hills, a massive new structure over the 101 Freeway is set to reconnect habitats that roads have kept apart for years.

The Wallis Annenberg Wildlife Crossing is scheduled for completion on December 2, 2026. Its goal is simple, help animals move safely between natural areas.

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Why highways are a problem

California’s highways help millions of people travel to work, school, and popular destinations. But for animals living in the surrounding hills, these roads can create serious barriers. A wide freeway with several lanes of fast-moving traffic is not something most wild creatures can cross safely.

Over time, these barriers can divide wildlife populations into smaller groups. That separation can make it harder for animals to find mates, locate food, and maintain healthy populations across their natural range.

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Meet the massive wildlife crossing

The Wallis Annenberg Wildlife Crossing stretches across the 101 Freeway in Agoura Hills, northwest of Los Angeles. The structure is designed to blend into the surrounding landscape rather than resemble a typical concrete road bridge…

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