Iowa Department of TransportationInformation about all routes in the State of Iowa including Federal, State, County, Municipal, Institutional and Ramp systems. Data is maintained inside the Roadway Asset Management System (RAMS). For Data Dictionary, please see https://data.iowadot.gov/pages/metadata-rams . For additional information on RAMS data, please see https://iowadot.gov/analytics#488921837-data-warehouse.ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/a8d6cac036164c0194eb3226f66f2aa8_0engIowaDOT Open DataPublicRoad Network [Iowa]Web servicesIowaLast Modified: 2026-01-02