Iowa Department of TransportationCurrent 511 Events for Missouri. This layer is updated every 10 minutes. This layer is provided as a courtesy from Iowa DOT. Iowa DOT does not take responsibility for its accuracy or completeness. Please visit Missouri 511 for up-to-date conditions.ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/361a84cd41e34513993ae770688bd6c3_1engIowaDOT Open DataPublic511 Traveler Information Events (Lines) - Missouri [Iowa]Web servicesIowaLast Modified: 2026-01-08