A support fixture for a wind turbine blades transported by rail. A main frame pivots about a first vertical axis and a first lateral axis, and has a frame arm extending from it. The main frame supports the wind turbine blade on a blade cradle. A root end stand is pivotally supported from the frame arm about a second vertical axis. A mounting flange adapter, coupled to the wind turbine blade, pivots about a second lateral axis and a longitudinal axis, and is supported by the root end stand. Fixture has universal adaptability by virtue of the plural axes of pivot.