South Dakota State Capitol South Dakota State Capitol The South Dakota State Capitol is the state capitol building of the U.S. state of South Dakota. Housing the South Dakota State Legislature, it is located in the state capitol of Pierre at 500 East Capitol Avenue. The building houses the offices of most state officials, including the Governor of South Dakota. The building was constructed between 1905 and 1910. The designs for the building were executed by the Minneapolis architectural firm of Bell & Detweiler, who gave the building similar features to the Montana State Capitol in Helena, Montana. The planning and construction cost was
South Dakota Highway 15 1976, when many of the suffixed state routes were eliminated, this route was redesignated as SD 123. South Dakota Highway 15Y (SD 15Y) was a short state highway in the northeastern part of the U.S. state of South Dakota. It was established in the early 1960s, from US 12 in Big Stone City to SD 15 southwest of Shady Beach. In 1976, it was redesignated as SD 109. South Dakota Highway 15 South Dakota Highway 15 (SD 15) is a state highway in the northeastern part of the U.S. state of South Dakota. It connects Clear Lake, Milbank, and Wilmot.