The official 1929 Highway Department map depicted surfacing and road conditions along US 66 as being mostly unchanged since the previous year, although newspapers reported otherwise. By December 1929, reconstruction was underway between Holbrook and New Mexico on completely rebuilding and realigning the highway. Similar work was being undertaken between Holbrook and Winslow, including the construction of two new bridges. Paving work began between Flagstaff and Winslow as well as between Topock and Kingman. On December 29, 1929, the state highway commission reported $508,594.94 (equivalent to $ in ) had been allocated in state funds that year to rebuild US 66, with $305,982.79 (equivalent to $ in ) of said funds being spent to improve over of the highway by years end. Much of this work included grading and draining work, paving work, gravel surfacing and bridge construction.