Iowa Department of TransportationThis layer displays all of the currently adopted Iowa Highway segments as related to the Adopt-A-Highway program. These layers were developed for utilization by the Electronic Permitting System (EPS) at the Iowa Department of Transportation.ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/8e1e0be46c3743a084487a4a461f2b6b_1engIowaDOT Open DataPublicPermits [Iowa]Web servicesIowaLast Modified: 2026-01-08