As rain soaked Southern California's roadways overnight, a series of three dangerous crashes were reported at the same spot in Santa Clarita, including a truck flipping over the side of a guardrail and crashing down on top of wreckage from an earlier collision.

The frightening pileups happened over a span of nine hours near the Highway 14 / 5 Freeway interchange.

The third and most startling of the crashes was captured on video by a passing motorist.