By 1930, noticeable changes were made to the highway. The route between Oatman and a point west of Peach Springs had reverted to an unimproved dirt road. However, the route was given a gravel surface between Williams and Flagstaff. Between Topock and Oatman, the highway was fully paved, as was the section between Meteor Mountain and Winslow. The highway had also been realigned and straightened between Seligman and Crookton. By 1931, all of US 66 between Flagstaff and Winslow was paved. Gravel surfacing was administered to US 66 from the New Mexico state line to an area southwest of Lupton. By 1932, US 66 had been paved between Crookton and Ash Fork. road surfacing also existed on the section of highway improved the year earlier, heading southwest from New Mexico through Lupton. Construction work was underway on US 66 between Seligman and Crookton, as was the highway between Oatman and Kingman. Despite the amount of work completed, a delegation of citizens representing towns along US 66 traveled to Phoenix on May 8, 1932, demanding the State Highway Commission to block funding for improvements to US 80 in favor of further improvements to US 66. Ultimately, the commission passed off the demands of the delegation and did not divert attention away from improving US 80.