Big Bear, Ca, October 10, 2011, 12:00pm – Caltrans will be busy this week repairing guardrails on roads leading to and from the Big Bear Valley.  Today there will be flagging on the back grade at Cushenberry Grade until 2:00pm.  Tomorrow flagging will occur on Highway 18 from the Big Bear Dam to Talbot in Big Bear, on Wednesday, guardrails will be repaired on Highway 38 from Onyx Summit to Hatchery Road, and on Thursday from the Cougar Crest Trailhead on North Shore Drive to Holcomb Valley road.  All flagging operations will occur between 8:00am and 2:00pm.  Caltrans advises motorists to drive with caution and reduce your speed through these work zones.