Lake County Illinois GISDownload In State Plane Projection Here . The pavement boundaries were traced from aerial photography taken between March 15th, 2018 and April 25th, 2018 . This dataset should meet National Map Accuracy Standards for a 1:1200 product. Lake County staff reviewed this dataset to ensure completeness and correct classification. In the case of a divided highway, the pavement on each side is captured separately. Island features in cul-de-sacs and in roads are included as a separate polygon. TYPE is a code referring to the type of pavement.ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/2424bb6e22d44262ac5f7532b0c99604_0engLake County Illinois Open Data PortalPublicEdge of Pavement [Illinois--Lake County]Web servicesIllinois--Lake CountyIllinoisLast Modified: 2026-01-04