166th Street in Rome Township, Deuel County, South Dakota

166th Street in Deuel County is an unpaved unclassified road. It runs in an east-west direction and crosses 467A Avenue, 469A Avenue and 470th Avenue and ends at 472nd Avenue, while the other end is a cul-de-sac. This street is part of the highways 289 and 11. 166th Street also exists in Portland Township and Antelope Valley Township.