An elevated section of Interstate 10 collapsed Sunday amid heavy rains in the California desert, injuring one driver, stranding many others, and halting travel for thousands by cutting off both directions of a main corridor between Southern California and Arizona. “Interstate 10 is closed completely and indefinitely,” said Terri Kasinga, spokeswoman for the California Department of Transportation. A bridge for eastbound traffic about 15 feet above a normally dry wash about 50 miles west of the Arizona state line gave way and ended up in the flooding water below, the California Highway Patrol said, blocking all traffic headed toward Arizona. MORE