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Travelers

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Inside SDDOT

About SDDOT

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Of Interest

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U.S. Highway 16 Corridor

Project Home Contacts Public Involvement Reduced Conflict Intersection (RCI) Information Corridor Study Materials

U.S. Highway 16 Corridor Map

Project Information Meeting

On Tuesday, Aug. 4, 2026, the South Dakota Department of Transportation (SDDOT) will hold an informational meeting at 5 p.m. to share information on the background and phases for the U.S. Highway 16/16B/Catron Boulevard interchange construction project in Rapid City.

View Meeting Materials

U.S. Highway 16 and 16B Interchange (2026-2029)