Seal of South Dakota of Fort Pierre and shall be the basis for all reproductions of the great seal of the State of South Dakota. The South Dakota Secretary of State is the designated custodian of the South Dakota State Seal. Seal of South Dakota The Great Seal of the State of South Dakota was designed while the area was a territory, in 1885. The outer ring of the seal contains the text "State of South Dakota" on the top and "Great Seal" on the bottom. Also the year of statehood, 1889. Inside the inner circle of the seal contains the state motto "Under
South Dakota Highway 30 segment extended from US 77, west of White, to the Minnesota state line. Both segments were connected by 1960. Nearly the entire highway west of US 77, which is now I-29, was decommissioned by 1965. South Dakota Highway 30 South Dakota Highway 30 (SD 30) is a state highway in the east-central part of the U.S. state of South Dakota. It connects the north-central part of Brookings with the northeastern part of it. SD 30 was established in the mid-1950s. It had two segments, which were connected by the end of the decade. However, most of the highway west of