Animal crossing: world’s biggest wildlife bridge comes to California highway

Unprecedented overpass will allow fauna of the Santa Monica mountains to safely cross a dangerous 10-lane stretch

Imagine cruising down a 10-lane highway and knowing that, high above your head, a mountain lion is quietly going along its way. This remarkable image could soon be reality for drivers on one of California's busiest roads, as the world's largest wildlife overpass begins construction this month.

The history-making project will comprise a green bridge built across the 101 highway near Los Angeles, creating a corridor between two parts of the Santa Monica mountains. Stretching 210ft long and 165ft wide, the overpass will allow safe passage for lizards, snakes, toads and mountain lions, with an acre of local plants on either side and vegetated sound walls to dampen light and noise for nocturnal animals as they slip across.