The inaugural Geo-Structural Aspects of Pavements, Railways, and Airfields Conference (GAP 2019) will be held 4 – 7 November 2019 in Colorado Springs, Colorado. This unique event has been developed in partnership with Federal Aviation Administration (FAA), Federal Railroad Administration (FRA), Federal Highway Administration (FHWA), and the U.S. Army Engineer Research and Development Center (ERDC) to learn and share practical information about the geostructural aspects of pavements.