[IN THE CENTRAL CALIFORNIA & SIERRA NEVADA] IS CLOSED FROM 3.5 MI EAST OF SILVER LAKE TO KIRKWOOD /CARSON SPUR/ (AMADOR CO) AT 2200 HRS ON 3/16/10 - DUE TO POOR VISIBILITY - MOTORISTS ARE ADVISED TO USE AN ALTERNATE ROUTE CHAINS ARE REQUIRED ON ALL VEHICLES EXCEPT 4-WHEEL-DRIVE VEHICLES WITH SNOW TIRES ON ALL 4 WHEELS FROM 6.3 MI EAST OF HAM'S STATION TO 6.5 MI EAST OF PEDDLER HILL (AMADOR CO) TO PICKETTS JCT (ALPINE CO)