pSnowy conditions triggered car crashes along I-35 in Iowa on Friday, December 29. As many as 20 cars ended up in the ditch on the side of the road north of Ames, a news report saida.ppAbout five inches of snow fell in Ames and Story County, and most of the accidents were reported along a 13-mile stretch around Story City, the report said.ppThis video shows some of the accidents near Story City.