UPDATE 3:43 p.m. All roads are now open.
Police are investigating a fatal traffic crash that occurred between a vehicle and motorcycle on 30th near Bluff Street at 11:17 a.m. Two people were on the motorcycle, one person was pronounced deceased at the scene and the other was transported to the hospital with critical injuries. The driver of the other vehicle remained at the scene. Police have closed 30th Street in both directions from Mapleton and Valmont. Alternate routes are advised.