Chicago’s getting a brand new ribbon of green space on Saturday. The 606 is a nearly three mile long recreational trail for biking, jogging and walking. It sits seventeen feet above the ground on an old elevated freight train track that passes through four neighborhoods: Wicker Park, Bucktown, Logan Square and Humboldt Park. The 606 officially opens June 6 but Mayor Emanuel had an unveiling of sorts on Tuesday. Before the announcement, we caught up with WBEZ’s Susie An for a first impression.