Arizona is one of the nation’s most urban states, and now it includes one of 20 “megapolitan” areas in the U.S. People have predicted for 50 years that Phoenix and Tucson would grow together into a giant desert conglomerate. That possibility has been seen as exciting, intriguing, and distressing. While a solid city along Interstate 10 is unlikely given the diverse land ownership in central and southern Arizona, the two metro economies are already merging.

Megapolitan: Arizona’s Sun Corridor, one of the first reports on a single megapolitan area, recognizes a more sophisticated technique for analyzing urban growth—that shared economic and quality of life interests are more important than physically growing together.

Scholars at Virginia Tech defined the megapolitans based on economic and growth patterns.
The Sun Corridor, which cuts across six counties from the border with Mexico to the center of Yavapai County, is the home of eight out of 10 Arizonans. In the next several decades, two out of three Americans will live in a megapolitan accounting for 60% of the population on only 10% of U.S. land.

Megapolitan offers a bold new picture of Arizona’s geography and its future opportunities and “megaton” challenges. This report presents a scenario for 2035 based on current trends. It analyzes the Sun Corridor and provides insights into the region’s global potential, water, governance, sustainability, and “trillion dollar questions.” It discusses the “tragedy of the sunshine” and asks the indispensable question: In 2035, do you want to live in the Sun Corridor?

The purpose of this paper is to provide background information on trends and possible future changes in urban structure and lifestyles important for planning the development of a parcel of Arizona state trust land known as Superstition Vistas (SV). This parcel, which is located just south of the Superstition Mountains in Pinal County, has an area of 275 square miles—enough land to provide housing for 900,000 new Phoenix metro-area residents at current population densities.

The aspects of future urban living discussed in this paper are those important for land-use planning—density, neighborhood design, transportation demand, etc. Very little attention will be given to the interior of homes. Also, since the SV parcel is currently undeveloped, emphasis will be placed on changes in urban structure that can be accomplished in greenfield developments rather than the in-fill of urban cores.

Arizonans have been divided in their feelings about growth and what to do about it, especially during the past two decades. To complicate matters, the debate over the best responses to growth has been drawn along overly simplistic lines—the economy versus the environment. Arizonans who follow the myriad issues related to urban growth closely are becoming convinced that the discussion needs to be recast in a new light.

Scholar Leo Marx coined the phrase “the machine in the garden” in 1964 to describe the relationship between nature and technology. Considering much of the writing about Arizona’s growth, it seemed an apt title for this volume of Arizona Policy Choices. "The Machine in the Garden" presents growth policy choices for Arizona along a continuum: Yesterday’s Growth—the policies that have been used in the past; Today’s Growth—the “smarter” approaches from around the country; and Tomorrow’s Growth—cutting edge thinking about the economy and experiments in urbanism and governance.

This publication offers comparative data and analysis on 10 public policy issues. With its scope and detail, "How Arizona Compares" will be of interest to many throughout Arizona and strives to encourage leaders and residents to discuss and move ahead on the state's most pressing public policy issues. The intent is for this publication to be studied and used for dialogue and action. The following sections are included: (1) Polishing the 48th Star; (2) Inside "How Arizona Compares"; (3) Arizona's Land and People; (4) Crime and Punishment; (5) Health and Health Care; (6) Education; (7) Business Futures; (8) Families and Incomes; (9) Signal Measures on Hot Topics; (10) Government; (11) Arts and Culture; (12) Housing; (13) Transportation; and (14) Environment. A list of selected sources is appended.