Dec. 23– 29 Most traffic-interfering work will be limited Monday through Wednesday for the Christmas holiday. Long-term projects State Highway 49 (Nevada County) — Work has resumed on the $29 million Highway 49/La Barr Meadows Project that will widen State Route 49 to four lanes between Little Valley Road and Norambagua Way, just south of Grass Valley. The project includes a signalized intersection at La Barr Meadows Road, widening of shoulders, right-turn pockets and new sound walls. Completion is expected by spring 2013. No traffic-interfering work is scheduled. Interstate 80 (Placer and Nevada Counties) from Carpenter Flat to Hampshire Rock …