This report represents the findings of a four-state study of longitudinal edge drain systems used in rigid pavements. The report includes a discussion of design philosophies and design criteria, construction practices, field performance comparisons, as well as a discussion of where edge drains may not be advisable. Trench drains and drainable asphalt concrete layers were found to be cost-effective in terms of their original cost and in their ability to remove water. Performance comparisons with 7-year-old pavements without drainage provisions indicate that edge drains can extend pavement life. Maintenance of the edge drain system was cited as a major contributor affecting pavement performance.