25 U.S.C. § 318b
Section, acts June 16, 1936, ch. 582, §6, 49 Stat. 1521; Sept. 5, 1940, ch. 715, §10, 54 Stat. 870; June 30, 1949, ch. 288, title I, §103(a), 63 Stat. 380; 1949 Reorg. Plan No. 7, §1, eff. Aug. 19, 1949, 14 F.R. 5228, 63 Stat. 1070, related to location and design of roads by the Bureau of Public Roads.