The section of US 60 from New Mexico to Amarillo was originally a portion of the
Ozark Trail and paralleled the
Panhandle and Santa Fe Railway, part of the
Atchison, Topeka and Santa Fe Railway. When Texas began numbering its highway system, the Ozark Trail received the number
State Highway 13. By 1920, the entire US 60 route had been renumbered as
State Highway 33, or its spur SH 33A, with the northeastern portion also following the AT&SF Railway. By the mid-1920s, the entire route had become an extension of the Abo Pass Highway, and was SH 33 along the entire length. In 1928, the
AASHO added the highway to the
U.S. Highway System as
U.S. Highway 164, with the Texas section being signed in 1929. It was renumbered as US 60 on June 8, 1931, when the route was extended to
Los Angeles, California, to make it a coast-to-coast highway. ==Major intersections==