400th Street in Clay County, Iowa

400th Street in Clay County is a secondary road (also known as County Highway B40). It runs in an east-west direction and crosses 110th Avenue, County Highway M27, 140th Avenue, 150th Avenue, 7th Avenue, Market Street, Park Street, 1st Avenue, 160th Avenue, 170th Avenue, 180th Avenue and 190th Avenue. It ends in a cul-de-sac and connects Clay County and Royal. 400th Street is also known as County Highway B40. This street is part of the highway "B40". 400th Street also exists in Dubuque County, Mills County, O'Brien County, Palo Alto County and Sioux County.