Calabasas shuts 101 northbound ramp during construction of $114 million wildlife bridge

Calabasas officials said the northbound U.S. 101 on-ramp at Liberty Canyon will be shut each weekday between 9 a.m. and 3 p.m. while work continues on the Wallis Annenberg Wildlife Crossing, the costliest wildlife overpass in the world at $114 million. Motorists are instructed to travel south on Liberty Canyon Road, turn west on Agoura Road and then north on Chesebro Road or Palo Comado Canyon Road to rejoin the freeway; Agoura Road will remain open but may experience occasional stoppages.

The 210-foot span, built of 26 million pounds of concrete and topped with several feet of soil and native vegetation, aims to heal ecosystems split by the 101. Originally budgeted at $92 million for completion in 2025, the project now draws $77 million from taxpayers and has faced criticism for its high price compared with similar crossings in Canada, Utah and Washington. The National Wildlife Federation’s #SaveLACougars campaign, sparked by the famed mountain lion P-22—who died in 2024 after famously navigating the 101—helped generate private support for the bridge. Construction crews are currently loading pallets of native plants onto the structure.