The initial crash was reported shortly before 6:15 a.m. on San Pablo Dam Road near Inspiration Point Trail and another crash was later reported about 100 feet south while authorities responded to the first collision, according to the CHP.
CHP Officer Scott Cakebread said no injuries were reported in either crash.
San Pablo Dam Road is expected to be closed until at least 8:45 a.m. because of the crashes, Cakebread said.
