Highway 1 Regent's Slide Repair Project

completed

Highway 1 in Big Sur, California, was fully reopened on January 14, 2026, after an $82 million engineering project to repair the Regent's Slide section of the highway. The project involved stabilizing a moving hillside that had caused a major landslide, using remote-controlled machinery, installing 4,600 steel shear dowels drilled into the slope, and building a permanent monitoring array to continuously measure slope behavior. The repair finished nearly 90 days ahead of schedule and included permanent rock-fall protection netting.