A single-vehicle crash closed the 2900 block of Montana Avenue early this morning. A 21-year-old woman who was driving the crashed vehicle was transported to a Billings hospital. She was in critical condition.

The crash happened at about 1:30. Montana Avenue was closed at the 2900 block and intersecting side streets while the investigation was ongoing. When officers arrived a passerby had stopped and was providing CPR to the woman, who was unconscious and having a hard time breathing.