Mountain lions and other wildlife will soon be roaming above a busy L.A. freeway

In order to help mountain lions and other animals struggling with isolation in the Santa Monica Mountains, Los Angeles is building the world's largest wildlife corridor, which will cross busy Highway 101.

"The ecosystem needs to be reconnected for all wildlife," Beth Pratt of the National Wildlife Federation told The Guardian. "Segmentation impacts animals both large and small, lizards and birds up to mountain lions." Animals were able to travel unimpeded before roads were carved into their habitat, and ecologists are worried now that mountain lions especially are stuck in just one area, making it difficult to mate. "We want these animals on the landscape and the population will go extinct if we don't do something soon," Pratt said.

The 165-foot long bridge will be surrounded by trees and bushes, so the animals won't even know they are on it. "The science tells us this is the better design," Pratt told The Guardian. "Some animals will use tunnels, some will not. We looked at the best solution for all wildlife so all creatures can use this." The $87 million bridge is now in its final design phase, and is expected to open in 2023. Pratt said if Los Angeles can undertake such a project, "it can work anywhere."

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