A decommissioned highway is a highway that has been removed from service by being shut down, or has had its authorization as a national, provincial or state highway removed, the latter also referred to as downloading. Decommissioning can include the complete or partial demolition or abandonment of an old highway structure because the old roadway has lost its utility, but such is not always the norm. Where the old highway has continuing value, it likely remains as a local road offering access to properties denied access to the new road or for use by slow vehicles such as farm equipment and horse-drawn vehicles denied use of the newer highway. Decommissioning can also include the removal of one or more of the multiple designations of a single segment of highway. As an example, what remains as U.S. Route 60 (US 60) between Wickenburg, Arizona, and Phoenix, Arizona, carried the routes of three US Highways (US 60, US 70, US 89) and one state highway (Arizona State Route 93). The highway remains a US Highway, but with fewer designations. In the United States Decommissioned highways are common in the United States. Even in the early years of the United States Numbered Highway System, some highways had short lives as US Highways especially if they were themselves short routes, such as the early US 110 in Wisconsin. Indeed, the fourteen shortest U.S. Numbered Highways that have ever existed were stripped of "US" status in 1982 or earlier. Extensions of US Routes have implied the elimination of earlier designations; for example, US 6, which originally went no farther west than the Hudson River in New York, was extended to Long Beach, California over routes that included an old Indiana State Road 6, most of an old US 32 between Chicago and Omaha, all of US 38 between Omaha and Denver, and an old California State Route 7 mostly in the Mojave Desert. US 6 was itself pared back to Bishop, California, in the Great Renumbering of California in 1964. As the states build freeways as a new classification of highways, the state may strip the old highway of its old designation as a numbered highway or downgrade it to a lesser status. For example, US 66, which connected Los Angeles and Chicago from 1926 until 1985, lost its designation as a U.S. Highway in favor of faster, more direct Interstate Highways, which had supplanted