The overpass will give wildlife a way to move safely across wilderness areas.
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It aims to help save our endangered mountain lions, as well as other animals that live in the Santa Monica Mountains and Simi Hills.
MORE | Wildlife crossing over 101 gets $25M challenge grant
Wildlife crossing over 101 Freeway to save mountain lions gets $25 million challenge grant
Several animals have been killed trying to cross that freeway.
This is expected to be the largest wildlife crossing in the world - spanning 210 feet over 10 lanes of highway.
The bridge recently received a $25 million conservation challenge grant from philanthropist Wallis Annenberg and the Annenberg Foundation to help break ground on the wildlife crossing.
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Construction could begin as early as this fall.
MORE | Mountain-lion crossing over the 101 closer to reality
Wildlife crossing over the 101 to save mountain lions getting closer to reality
MORE: Take a look at wildlife on Utah's 'Critter Bridge'
Take a look at the wildlife on Utah's 'Critter Bridge'
City News Service contributed to this report.