Taxpayers Stung: $114M ‘Butterfly Bridge’ Chaos

A key on-ramp to one of California’s busiest freeways is shutting down for months so a $114 million wildlife bridge can be finished for mountain lions and butterflies.

Story Snapshot

California will close a northbound U.S. 101 on-ramp at Liberty Canyon Road 24/7 for about two months to finish the Wallis Annenberg Wildlife Crossing.
The wildlife bridge’s price has jumped from about $92 million to roughly $114 million, with taxpayers covering about $77 million of the cost.
Drivers face ramp and road closures, overnight freeway shutdowns, and daytime detours, even as California struggles with high costs and budget problems.
Supporters say the bridge will reconnect habitat and cut animal crashes, but critics call it a wasteful “bridge to nowhere” that insults taxpayers.

Two‑Month Ramp Closure for a Wildlife Bridge

The California Department of Transportation plans to close the northbound U.S. Highway 101 on-ramp at Liberty Canyon Road in Agoura Hills around the clock for roughly two months to advance construction of the Wallis Annenberg Wildlife Crossing. The agency says crews need the closure to place rocks and landscaping on the massive overpass so animals can eventually cross the freeway safely. This closure comes on top of earlier daytime ramp shutdowns and overnight lane closures tied to the same project.

Local cities have warned drivers that the on-ramp shutdown and related work will push traffic onto nearby streets and alternate freeway entrances. Earlier phases already brought overnight closures of all southbound lanes of the 101 for several weeks so crews could install heavy concrete beams across the freeway. Caltrans has also ordered full daytime closures of Agoura Road, the key surface street frontage, between Rondell Street and Hydepark Drive while abutment walls and other bridge supports are built.

A $114 Million Wildlife Crossing, Mostly on the Taxpayer’s Tab

The Wallis Annenberg Wildlife Crossing was originally pitched as roughly a $92 million public‑private partnership to reconnect habitat for mountain lions and other wildlife in the Santa Monica Mountains. As bids for later construction stages came in, costs climbed by about $21 million, pushing the projected total to around $114 million. Reports now show that about $77 million of that amount comes from state funding, while private donors have provided about $37 million, meaning taxpayers are carrying most of the bill.

Project partners say the price spike reflects inflation, higher construction costs nationwide, and complex engineering over a busy freeway. They note that California earthquake rules, utility relocations, and sound and light barriers add cost compared to simpler wildlife bridges in other states. Critics, including conservative commentators, counter that the bridge is years late, millions over budget, and launched as a feel‑good environmental symbol while the state faces deficits and basic infrastructure needs.

Supporters Promise Safety and Habitat Gains

Supporters from Caltrans, the National Park Service, and conservation groups argue the crossing will reduce deadly crashes between vehicles and wildlife and reconnect fragmented habitat that has trapped mountain lions in a shrinking range. They describe the bridge as part of a long‑term safety and conservation strategy, saying the short‑term pain for drivers will pay off in fewer accidents and a healthier ecosystem once animals use the landscaped overpass. Research from other states has shown wildlife crossings can sharply cut animal‑vehicle collisions, and backers cite that record to defend the project.

The official project FAQ frames the crossing as “the largest wildlife crossing in the world” and stresses that most freeway lanes stay open during the day, with only limited nighttime directional closures. Agencies highlight detour plans, one‑way traffic controls, and carefully scheduled work windows to show they are trying to balance commuter needs with construction demands. For residents who care about nature and worry about roadkill on canyon roads, that message resonates. For many everyday commuters stuck in detours, it often does not.

Commuter Frustration and the “Bridge to Nowhere” Label

As viral drone videos showed the bridge standing over the freeway but not yet fully tied into the hills on both sides, critics blasted it as a “bridge to nowhere” that still cannot carry animals even after years of work and tens of millions of dollars. Tabloids and opinion writers dubbed it a “butterfly bridge” and mocked the idea that drivers heading toward Malibu must endure closures so insects and cougars can cross in style. Some conservative outlets have called for audits, pointing to the ballooning price tag and missed deadlines as signs of deeper mismanagement.

The Santa Monica Mountains National Recreation Area National Park Service biologists recently captured and GPS-collared four adult female deer–D60, D61, D62, and D6–near the almost completed Wallis Annenberg Wildlife Crossing–including three of them in one day!

These were… pic.twitter.com/LzVA6V9nwF

— Beth Pratt (@bethpratt) July 29, 2026

Fed‑up residents now face ramp closures that last weeks, daytime street shutdowns, and repeated overnight freeway closures, all as California struggles with high taxes, rising living costs, and questions about basic road upkeep. For many drivers, this project has come to symbolize a familiar pattern: elites in Sacramento green‑lighting high‑dollar “statement” infrastructure while commuters absorb the disruption and the state’s budget slides deeper into the red. Even supporters admit costs have risen and timelines have slipped, but they insist the end result will justify the strain.