The purpose of this study is to build an econometric and demographic model of the Sun Corridor to forecast long-term economic and demographic conditions in the “megapolitan” region. To this end, the study examines the long-term economic and demographic forces that could affect economic development in the 3-county Sun Corridor megapolitan area that includes Maricopa, Pinal and Pima Counties. This information is used to develop a set of realistic economic/demographic scenarios to drive the forecasting model.

Transportation excise tax money is statutorily restricted to street and highway purposes or transportation projects. Gila County demonstrated that it spent excise tax monies during calendar years 2009 through 2013 to address traffic safety and congestion issues and deteriorating road conditions. Also, in January 2014, the County completed the Gila County Transportation Study, which identified the most critical future transportation infrastructure needs and recommended projects to address those needs. We also determined that the County spent its excise tax monies solely for street and highway purposes or transportation projects as required by Arizona Revised Statutes §28-6392(B), and implemented all but one of our prior audit recommendations.

The State of the System Report is a compilation of the physical inventory and status of the Maricopa County Department of Transportation’s infrastructure. It addresses roadway congestion, traffic safety, low volume road paving, bridges, and pavement conditions. Also, included are recommendations for future improvements within each of the infrastructure categories. The SOS report has been produced annually since 1998.

The result of an application to the Arizona Department of Transportation Planning Assistance for Rural Areas (PARA) Program to conduct a multimodal transportation study to address transportation issues in the community. The purpose of the study is to identify the most critical multimodal transportation infrastructure and service needs within the Picture Rocks study area and recommend a program of short-range (0-5 years), mid-range (6-10 years), and long-range (11-20 years) improvements.

Arizona is one of the most highly urbanized states in the nation with 87.5% of the population as of 1990 lives in an urban area. Corporate American views Tucson for tourism and mining. It is also known for aviation, missiles and aerospace; and for its astronomy and optics like Kitt Peak and Mt. Graham observatories. "Economic success will increasingly be determined by how effectively an area can spur technological innovation, entrepreneurship, education, specialized skills, and the transition of all organization -- public and private -- from bureaucratic hierarchies to learning networks."