California Department of Transportation
 

Road Information - Winter Driving Tips - Mountain Pass Closures

Before driving, check with the Caltrans Highway Information Network (CHIN) 800.427.7623

Mountain Pass Route 2009/10 2010/11 2011/12 2012/13 2013/14 2014/15
Ebbetts Pass SR 4 12/03 - 5/28 11/22 - 6/07 1/25/12 - 5/11 12/17 - 4/25 12/09 - 4/18 12/12 -
Monitor Pass SR 89 12/28 - 4/14 12/15 - 4/29 1/25/12 - 4/16 12/18 - 4/10 12/09 - 1/13  
Lassen Loop SR 89 11/18 - 7/08 110/8 - 7/18 11/23 - 6/01 11/29 - 6/06 1/7/14 - 5/19 11/19 -
Sonora Pass SR 108 12/01 - 5/28 11/22 - 5/27 1/21/12 - 5/04 12/19 - 4/24 12/09 - 4/18 12/17 -
Tioga Pass SR 120 12/01 - 6/05 12/15 - 6/18 1/25/12 - 5/07 12/19 - 5/11 12/12 - 5/02 12/19 -
June Lake Loop SR 158 12/23 - 4/16 12/15 - 4/18   1/15/13 - 3/13    
Mammoth Lakes SR 203 10/15 - 6/24 11/09 - 6/27 11/04 - 5/30 11/10 - 5/22 10/28 - 5/23  
Lake Sabrina to Aspendell SR 168 12/09 - 4/22 12/15 - 4/29 11/22 - 4/16 01/15 - 4/15 11/25 - 4/15 12/22 -

Historical mountain pass closure dates are available HERE.