The overpass will give wildlife a way to move safely across wilderness areas.
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.
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.