In connection with the construction and development of the Garrison diversion unit of the Missouri River basin project, there is granted over all the lands belonging to the state, including lands owned or acquired for highway right-of-way purposes, a right of way for ditches, pipelines, or canals and for tunnels, tramways, and telephone and electric transmission lines constructed as part of the Garrison diversion unit; provided, however, that the director of the department of transportation, the board of county commissioners, or the board of township supervisors must approve the plans of the bureau of reclamation with respect to the use of any and all right of way of roads under their respective control prior to such grant becoming effective.