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 2007/08 2008/09 2009/10 2010/11 2011/12 2012/13 2013/14
Ebbetts Pass SR 4 12/10 - 5/09 12/15 - 5/08 12/03 - 5/28 11/22 - 6/07 01/25 - 5/11 12/17 - 4/25 12/09 - 4/18
Monitor Pass SR 89 12/21 - 4/09 12/15 - 4/17 12/28 - 4/14 12/15 - 4/29 01/25 - 4/16 12/18 - 4/10 12/09 - 1/13
Lassen Loop SR 89 12/21 - 5/15 12/22 - 6/04 11/18 - 7/08 110/8 - 7/18 11/23 - 6/01 11/29 - 6/06 01/07 -
Sonora Pass SR 108 12/10 - 5/08 12/14 - 5/14 12/01 - 5/28 11/22 - 5/27 01/21 - 5/04 12/19 - 4/24 12/09 - 4/18
Tioga Pass SR 120 12/21 - 5/20 12/17 - 5/19 12/01 - 6/05 12/15 - 6/18 01/25 - 5/07 12/19 - 5/11 12/12 -
June Lake Loop SR 158 12/21 - 4/04 12/23 - 4/20 12/23 - 4/16 12/15 - 4/18   01/15 - 3/13  
Mammoth Lakes SR 203 11/27 - 5/29 10/31 - 6/08 10/15 - 6/24 11/09 - 6/27 11/04 - 5/30 11/10 - 5/22 10/28 -
Lake Sabrina to Aspendell SR 168 12/07 - 4/12 11/26 - 4/20 12/09 - 4/22 12/15 - 4/29 11/22 - 4/16 01/15 - 4/15 11/25 - 4/15

Historical mountain pass closure dates are available HERE.