399th Avenue in Fairfield Township, South Dakota

399th Avenue in Beadle County is an unpaved unclassified road. It runs in a north-south direction starting from 196th Street and crosses 198th Street, 201st Street, 202nd Street, 203rd Street, 204th Street and 27th Street Northwest. It connects Fairfield Township and Theresa Township. 399th Avenue also exists in Pleasant View Township.