A drone photograph of the Wallis Annenberg Wildlife Crossing on Wednesday, October 7, 2026 in Agoura Hills, CA. One of the project's most recent milestones was completion of the concrete deck on the bridge that spans across Agoura Road. This phase of work was the culmination of a complex and multi-agency effort that moved multiple high-voltage power lines and telecommunication lines underground and rerouted and upgraded a regional waterline, all while protecting two natural creeks and preserving dozens of heritage oak trees. To build the foundation of that structure, crews also had to drill and construct dozens of 75-foot-deep concrete pile structures along Agoura Road. Image: Kayla Bartkowski / Los Angeles Times via Getty Images

California is known for its giant, multi-laned highways bustling under bright blue skies.…