As part of a project to widen Highway 101, CalTrans crews have embarked on a three-month effort to move 3,500 feet of rail line in San Rafael 50 feet to the west. The Sonoma-Marin Area Rail Transit (SMART) hopes to use the old Northwestern Pacific railway for passenger train service in 2014. The fledgling transit authority, which now faces a $155 million shortfall, is unsure when the tracks will be used. “We’ve always assumed that…