Arizona State and Local Government Documents Collection

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.

The Ak-Chin Indian Community is nestled in the Santa Cruz Valley of Southern Arizona and encompasses 22,160 acres. Situated in northwestern Pinal County, the central portion of the Community is located five miles south of the City of Maricopa. State Route 347 runs north-south through the center of the Community, serving the Community, the City and the County. This roadway provides a direct route to Interstate 10 and the Phoenix metropolitan area, which is just 40 miles to the north. SR 347 also connects to Interstate 8 approximately 15 miles to the south. A second State facility, State Route 238 intersects the north end of the Community and provides east-west access to the City of Maricopa and SR 347 from the western edge of the Community. These regional facilities provide the Community with access to many needed services that are not available within the Community itself, including medical providers, shopping, and schools. Beyond the accessibility and mobility afforded by the State facilities, the Community is relatively landlocked served directly by only three rural roadways: Peters and Nall Road, Farrell Road and Ralston Road.

This planning project is to update the Ak-Chin Indian Communityís Long Range Transportation Plan. The study area is within the Community boundaries and adjacent Community-owned land. The principal focus of the project is to address the most critical transportation planning needs identified by the Community. This will include, but is not limited to a needs analysis and evaluation for all priority roadway corridors within the project area. The major transportation goals of the Community include: (1) Promote an effective, well-planned transportation system of roadways that establishes functional, safe, and durable streets; (2) Create ordinances, policies, or design guidelines that support the transportation plan; and (3) Provide for and encourage use of non-vehicle modes of transportation. The major product of the study will be a final report, which contains the updated Ak-Chin Indian Community Long Range Transportation Plan and a Plan for Improvements. Taking into consideration received input, the updated LRTP will span over five, ten and twenty year periods, incorporating both roadways and the multimodal needs of the Community.

Development of the Ak-Chin Indian Community Long Range Transportation Plan will be conducted according to a cooperative planning process involving stakeholders that include Community departmental staff, public agency staff, elected Community officials, and Community members. Throughout the study, information will be presented to and solicited from stakeholders through interviews and to the general public through public meetings and other means of communication.

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).