As part of the Long Term Pavement Performance (LTPP) Program, the Arizona Department of Transportation constructed 19 Specific Pavement Studies 6 (SPS‐6) test sections on Interstate 40 near Flagstaff. The SPS‐6 project studied the effect of specific rehabilitation treatments on jointed portland cement concrete pavement (JPCP) performance. The test sections had various JPCP surface preparations, including crack and seat, minimum and maximum restoration, rubblization, asphalt concrete (AC) with fabric, and asphalt rubber with conventional AC. Opened to traffic in 1991, the project was monitored at regular intervals until 2002. Surface distress, profile, and deflection data collected throughout the life of the pavement were used to evaluate the performance of various flexible pavement design features, layer configurations, and thickness. This report documents the analyses conducted as well as practical findings and lessons learned that will be of interest to ADOT.

Over the past 15 years, the Phoenix-Mesa Gateway Airport has been in a continual planning and development program, responding to the dynamic air travel market in the Phoenix metropolitan area. A study was done to develop a phased, revenue generating land use and ground transportation plan for an approximate 660 acre parcel, with an adjoining 31 acre privately-owned parcel, both located in the Northeast Area of the Airport. This report presents the analysis, findings, and recommendations in support of those objectives.

In "Roadmap to Arizona's Economic Recovery," a general fund revenue forecast is presented which includes proposed changes to the revenue system. If the proposed changes are backed out of these figures, the baseline forecast can be obtained. This addendum provides detail on the Roadmap's revenue projection. the three key points are: 1) Arizona's economy is highly cyclical, growing much faster than the nation during economic expansions; 2) Revenues everywhere, but especially in Arizona, given its revenue structure, are much more cyclical than the overall economy; 3) the revenue forecast in the Roadmap is actually conservative. Revenues relative to the size of the economy remain below the historical norm, even in fiscal year 2015.