In this photo provided by Caltrans, large rocks and debris from a flash flood cover the Sheep Creek Bridge in San Bernardino County, Calif., Monday, Aug. 21, 2023. Crews worked to dig roads, buildings and care home residents out of the mud across a wide swath of Southwestern U.S. desert Monday, as the first tropical storm to hit Southern California in 84 years headed north, prompting flood watches and warnings in half a dozen states. (Caltrans via AP)