Central Avenue is a major east–west street in Albuquerque, New Mexico, which historically served as the city's main thoroughfare and principal axis of development. It runs through many of Albuquerque's oldest neighborhoods, including Downtown, Old Town, Nob Hill, and the University of New Mexico area. Central Avenue was part of U.S. Route 66 from 1937 until the highway's decommissioning in 1985 and also forms one axis of Albuquerque's house numbering system. It was also signed as Business Loop 40 until the early 1990s when ownership of Central Avenue was transferred from the New Mexico State Highway Department to the City of Albuquerque.