1969 9031 (Interstate 15, Santaquin to Nephi)
The 1969 9031 (Interstate 15, Santaquin to Nephi, Utah) vertical, black and white (panchromatic) aerial project was acquired by the Utah Department of Highways (UDOH), now the Utah Department of Transportation (UDOT), at a scale of 1:18,000 (1 inch equals 1500 feet).