There has a been a mud-rockslide on Highway 1 at MM 34.6 (JSO JP Burns) and the Highway will be closed overnight between MM 42 (Grimes) and MM 10 (Willow Springs). CHP site says:
8:46 PM 11  PER CALTRANS / SR 1 CLOSED AT MM 10 ON SOUTH END AND MM 42 ON NORTHSIDE
8:44 PM 10  ERIC/ CALTRANS SUPERVISOR FROM BIG SUR / SAYS SIGNS SHOULD SAY CLOSED AT MM 34*6
8:05 PM 9  HEWAB #: 1 REPORT TYPE: * HEWAB * HIGHWAYS AFFECTED: SR1 FROM RIO RD TO SLO CO LINE CONDITION: Closed ESTIMATED DURATION: TOMORROW AM SUMMARY: CLOSED DUE TO MUD AND ROCK SLIDES ALTERNATE ROUTE(S): US 101
Caltrans will have crews out at first light to clear the road.