California, to Chicago, Illinois. However, after a major disagreement and argument between proponents of the Chicago-to–Los Angeles route and dignitaries from the state of Kentucky, AASHO moved the proposed US 60 designation was moved onto a different highway between Virginia Beach, Virginia, and Springfield, Missouri. This was done to give the Kentucky proponents the benefit of having a route ending in "0" passing through their state. The future Chicago–Los Angeles route was first intended to be re-designated US 62, but was instead re-designated US 66 at the request of the Chicago–Los Angeles route proponents. After some other alterations were made to the newly proposed U.S. Highway System, the system was ratified and approved by AASHO on November 11, 1926, making all the newly proposed routes official. With this, a large portion of the National Old Trails Road through the southwestern United States, including Arizona, was designated as a section of US 66. The original route of the National Old Trails Road southeast of Holbrook through Springerville became the westernmost section of US 70 (now US 180), making the junction of the old and new National Old Trails alignments the national western terminus of the new US 70. The US 66 designation was recognized by the newly formed Arizona State Highway Department (sometimes abbreviated as ASHD) after the state highway system was reorganized on September 9, 1927. The reorganization entailed a transition from state-named highways to state- and U.S.-numbered highways. Arizona now had two principal cross-country U.S. Highways across the entire state: US 66 served the northern part of the state, while the southern half of Arizona heavily promoted and focused on US 80. Proponents of US 80 in Arizona had given their highway the nickname "The Main Street Through Arizona". At the same time, the newly formed U.S. Highway 66 Association dubbed US 66 the "Main Street of America", which may have been in response to the US 80 nickname. From 1927 onward, a friendly in-state competition existed between proponents of US 66 and US 80 within Arizona. The early years The name "National Old Trails Road" was officially dropped from US 66 in Arizona by December 1927. Immediately, the counties US 66 traveled through in northern Arizona began campaigning for the highway to be fully paved. In the middle of 1928, numerous bond issues passed by cities, states and the federal government were allocated to help begin paving work