Arizona State and Local Government Documents Collection

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.

A comprehensive research program for the characterization of storm water runoff from an Arizona highway was conducted from January through December 2007. The study area covered a portion of the Loop 202 freeway west of Mesa Drive to a retention basin east of Lindsay Road in Mesa, Arizona. Storm water samples were collected from two storm water detention basins and a discharge point to the Salt River. The study was conducted by manually collecting storm water samples with passive automatic samplers and analyzing them for various roadway constituents. A primary objective of this research effort was to establish baseline values of constituents in ADOT highway runoff, aiding in the evaluation of related best management practices. A total of 16 storm water samples was collected from the research area between January 2007 and December 2007.

This project required the completion of Construction Data Forms for the Strategic Highway Research Program's (SHRP's) Specific Pavement Studies (SPS) Experiment Number 5, The Rehabilitation of Asphalt Concrete Pavements, and Experiment Number 6, The Rehabilitation of Jointed Portland Cement Concrete Pavements. In Arizona, the SPS-5 experiment construction was done in the eastbound travel lane of Interstate Highway 8, between mileposts 159 and 161 in southwestern Arizona. Eleven test sections were constructed for the experiment, with eight as set forth in SHRP guidelines. In addition, two additional sections were constructed, and one designated as the control section, for a grand total of eleven sections.

This project was undertaken to compare operational and safety characteristics of leading versus lagging protected left turn operation. The measures of effectiveness included field measured intersection delay with leading and with lagging left turns. Intersections in Pima County, Glendale, Tempe and Mesa, Arizona were studied with both leading and lagging operation. Intersection delay studies were also done with first car versus third car actuation of leading protected left turn phases. Signal progression was studied with leading, lagging and combination of leading and lagging left turns which provided the best progression. This evaluation was accomplished with an instrumented vehicle and travel time runs throughout a grid. Accident studies were conducted in Tucson, Pima County and Scottsdale, Arizona. These studies compared accident frequency before and after the conversion from leading to lagging left turns. A public opinion survey was conducted to obtain motorists' preference of leading or lagging left turns.

Guidelines were developed to assist the Arizona Department of Transportation (ADOT) in (1) determining if an existing sign installation, not in compliance with current safety standards, should be replaced by a system that does meet the safety standards, and (2) selecting a cost effective sign support for new installations. A benefit/cost (B/C) program, developed at the Texas Transportation Institute (TTI) was used to develop the guidelines.

This report describes a series of full-scale vehicular crash tests conducted to evaluate the impact performance of small sign supports used by the Arizona Department of Transportation (ADOT). The tests were conducted and evaluated in accordance with the recommendations of NCHRP Report 230 and the 1985 AASHTO "Standard Specifications for Structural Supports for Highway Signs, Luminaires and Traffic Signals."