Road Information - Winter Driving Tips - Mountain Pass Closures
Before driving, check with the Caltrans Highway Information Network (CHIN) 800.427.7623
| Mountain Pass | Route | 2004/05 | 2005/06 | 2006/07 | 2007/08 | 2008/09 | 2009/10 | 2010/11 | 2011/12 |
|---|---|---|---|---|---|---|---|---|---|
| Ebbetts Pass | SR 4 | 10/29-5/26 | 11/28-5/25 | 12/11-5/10 | 12/10-5/09 | 12/15-5/8 | 12/03-5/28 | 11/22-6/7 | 1/25- |
| Monitor Pass | SR 89 | 11/25-4/26 | 12/05-4/27 | 12/11-3/16 | 12/21-4/09 | 12/15-4/17 | 12/28-4/14 | 12/15-4/29 | 1/25- |
| Lassen Loop | SR 89 | 10/29-6/02 | 11/08-7/06 | 11/13-5/18 | 12/21-5/15 | 12/22-6/04 | 11/18-7/8 | 110/8-7/18 | 11/23- |
| Sonora Pass | SR 108 | 10/17-5/25 | 12/05-5/25 | 11/16-5/11 | 12/10-5/08 | 12/14-5/14 | 12/01-5/28 | 11/22-5/27 | 1/21- |
| Tioga Pass | SR 120 | 10/17-6/24 | 11/29-6/17 | 11/27-5/11 | 12/21-5/20 | 12/17-5/19 | 12/01-6/5 | 12/15-6/18 | 1/25- |
| June Lake Loop | SR 158 | 11/26-4/22 | 12/19-4/25 | 12/06-4/25 | 12/21-4/04 | 12/23-4/20 | 12/23-4/16 | 12/15-4/18 | |
| Mammoth Lakes | SR 203 | 10/21-6/28 | 11/08-6/23 | 11/27-5/18 | 11/27-5/29 | 10/31-6/08 | 10/15-6/24 | 11/09-6/27 | 11/04- |
| Lake Sabrina to Aspendell | SR 168 | 11/16-04/22 | 12/05-4/27 | 12/26-4/05 | 12/7-4/12 | 11/26-4/20 | 12/09-4/22 | 12/15-4/29 | 11/22- |