SD 123 Travel Info
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South Dakota Highway 123 (SD 123) is a 10.486-mile-long (16.876 km) state highway in the U.S. state of South Dakota that runs from U.S. Route 12 (US 12) near Marvin to SD 15 in Wilmot. It is maintained by the South Dakota Department of Transportation (SDDOT), and is not part of the National Highway System.
SD 123 begins at an intersection with US 12 east ... more
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