Time-lapse view of California Highway 1 reconstruction after 2017 landslide

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USGS scientists produced an animated GIF in coordination with the California Department of Transportation (Caltrans) re-opening of State Highway 1 through Big Sur on July 18, 2018.

Animation is looking at an angle at a coastal cliff region with a newly cut road running across it, showing how it has changed.

In 2017, the massive Mud Creek landslide buried a quarter-mile of the famous coastal route with rocks and dirt more than 65 feet deep. As part of a new research project to monitor erosion along the landslide-prone cliffs of Big Sur, USGS scientists collected aerial photos before and after the slide, and during the construction project. By analyzing overlapping photos, they made precise maps of the slopes and calculated volumes of material lost or gained over time. Our researchers shared data and images with Caltrans to help ensure the safety of workers and the success of the road reconstruction.

Read more about the USGS research project: Remote Sensing Coastal Change.

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