Aspen Avenue in Washington Township, Carroll County, Iowa

Aspen Avenue in Carroll County is an unpaved unclassified road (also known as 400th Street;County Highway M64). It runs in a north-south direction and crosses 120th Street, 130th Street, 140th Street, 150th Street, 160th Street, 170th Street, 180th Street, 185th Street, 200th Street, 210th Street, 220th Street and 230th Street. It ends in a cul-de-sac and connects Ewoldt Township, Arcadia Township, Washington Township and Wheatland Township. Aspen Avenue is also known as 400th Street.