AUSTIN, Texas — Firefighters from Lake Travis Fire Rescue, with assistance from Austin Fire Department, Oak Hill Fire Department, and Ce-Bar Fire Department, have contained a residential structure fire in the 12000 block of Carlsbad. No injuries have been reported, and the cause of the fire is under investigation.Carlsbad Road remains blocked as firefighters continue their work and fire hoses are deployed across the ground, according to Lake Travis Fire Rescue. Residents are advised to avoid the area, exercise caution, and allow first responders to perform their duties safely…