Interstate 29 (northbound and southbound) from Watertown to the North Dakota border is closed. Visibility is limited if it is not zero and roadways are ice covered. Snow drifts on US 12 near Waubay are difficult to get through if not impassable. Parts of the state are under no travel advisories. Check out sd511.org for updates on road conditions. This video was taken on I 29 near the Summit exit. Visibility appears better in the video than it actually is. | South Dakota Highway Patrol