The current organization charts are published of 48 state highway organizations, the District of Columbia, Hawaii, and Puerto Rico. All of the charts presented were obtained directly from the states for this publication. A brief history is presented of the organization of state highway departments. Recent reorganization proposals in a number of states indicate a growing awareness of the fact that a properly designed organizational structure, with a logical grouping of functions and a minimum amount of sub-division, permits an effective management job with a minimum administrative staff. These organization charts are presented with the increasing recognition of the need for giving constant study to the organizational structure.