[IN THE CENTRAL CALIFORNIA & SIERRA NEVADA] IS CLOSED AT CARSON PASS SUMMIT (ALPINE CO) FROM 1000 HRS TO 1300 HRS MONDAY THRU FRIDAY THRU 9/20/11 - DUE TO BLASTING - MOTORISTS ARE SUBJECT TO DELAYS OF UP TO 2 HOURS - MOTORISTS ARE ADVISED TO USE AN ALTERNATE ROUTE 1-WAY CONTROLLED TRAFFIC AT CARSON PASS SUMMIT (ALPINE CO) 24 HRS A DAY 7 DAYS A WEEK THRU 0600 HRS ON THRU 9/30/11 - DUE TO MAINTENANCE - MOTORISTS ARE SUBJECT TO DELAYS OF UP TO 10 MINUTES