Contra Costa County January 2, 2023 5:05 pm Mudslides, Sinkholes and Flooding Close Roads in Contra Costa County Mudslides, recent flooding and a sinkhole have shut down three roadways in unincorporated Contra Costa County, public works officials said Monday. Jodi Hernandez reports. US & World Videos 5:53 Sunnyvale sisters to swim from Alcatraz to San Francisco for 100th time 2:35 Simone Biles brings “GOAT Tour” to San Jose 2:38 Caltrain welcomes all-electric fleet 1:13 VTA employee shot, killed at bus yard 6:04 VTA briefs community on deadly shooting