Selected papers from Geotechnical Frontiers 2025, held in Louisville, Kentucky, March 2–5, 2025. Sponsored by the Geosynthetic Materials Association, Advanced Textiles Association, and the Geo-Institute of ASCE.

This Geotechnical Special Publication contains 61 peer-reviewed papers on soil characterization and improvement.

Topics include: engineering geology and site characterization; geophysical engineering; rock mechanics; soil improvement; soil properties and modeling; and unsaturated soils.

GSP 368 will be of interest to geotechnical engineers, researchers, contractors, and other geoprofessionals working with various soil types and sites.