DURANGO, Colo. (KKCO) The "Stateline Fire" started around 3:45pm Saturday along U.S. Highway 550. Officials say the fire has burned 80 acres so far. It's threatening structures and well pads. Pre-evacuation orders are going out via reverse 911 to residents along the southern 3 miles of CR 213, La Posta Road. Firefighters at the scene say smoke is seriously obstructing visibility, and driving is unsafe at this time. Highway 550 was temporarily closed at the Colorado/New Mexico state line. Several agencies are fighting the fire.