Performance Evaluation of Arizona's LTPP SPS-6 Project: Strategic Study of Rehabilitation Techniques
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.
This study is intended to assess flood risk, and identify flood hazards based on those risks, for the Beaver Dam area from the Beaver Dam Wash. The hydrologic and hydraulic results are intended for risk assessment and emergency management purposes only. The results of this study should not be considered as “best available technical information” for floodplain management purposes.”
The Short Range Transit Program identifies those regional transit service and capital improvements programmed in the Transit Life Cycle Program during the next five years and provides support for regional transit projects contained in the Maricopa Association of Governments Regional Transportation Plan.
Valley Metro's management is responsible for establishing and maintaining an internal control structure designed to ensure that the assets of METRO are protected from loss, theft, or misuse and to ensure that adequate accounting data are compiled to allow for the preparation of financial statements.
The Project is responsible for the design and construction of a 19.6 mile, double track system. These reports offer a month-by-month progress report.
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.
Under contract HFR-PL-1(31)264, "Concrete Pavement Design and Rehabilitation," a comprehensive data base was created which contains pavement design and construction data, climatic information, traffic data, and condition data for 48 pavement sections. The data base includes projects from jointed concrete pavements (40 sections), prestressed concrete pavements (4 sections), continuousIy reinforced concrete pavements (2 sections), and 3-layer structural rehabilitation pavements (2 sections).