The Arizona Department of Transportation’s (ADOT’s) process for working with Local Public Agencies (LPAs) in the development and delivery of their transportation projects has evolved over the years. Recent changes in Arizona’s economy have reduced the distribution of state funds for local transportation projects, which has increased the demand for federal funding sources. In response to the anticipated increase in LPA projects desiring the use of federal funds and the continuing need to meet state and local transportation requirements, this updated manual highlights the steps necessary to capably deliver LPA projects in compliance with federal, state, and local requirements.

The ADOT Local Public Agency Projects Manual has been a collaborative effort among the various Divisions, Groups, and Sections within ADOT, as well as the Federal Highway Administration (FHWA) Arizona Division, with input from LPAs. ADOT would like to express sincere gratitude to Logan Simpson Design Inc. for successfully facilitating that effort and for their contribution to the production of this manual. Their hard work and in-depth coordination with ADOT and FHWA staff has been invaluable to the preparation of this manual.

This "document was prepared in 2008-2009. In addition to field reviews and available research, significant information was obtained from public opinion and concerns voiced during the public and Citizen Advisory Committee meetings held along the route. The primary objective of this report is to document desired efforts along the Fredonia-Vermilion Cliffs Scenic Road that will sustain its resources for future generations. Additionally, this document fosters the necessary relationships required to promote and protect the intrinsic qualities that define this scenic road experience."--Foreword

Composite materials using asphalts, mineral dusts, and a class of chemical coupling agents known as reactive silanes are prepared for use as binders in paving construction where asphalt alone is in general use at the present. The report describes how these coupling agents may, in very low concentrations, react with both asphalts and mineral dust fillers at the interfaces of their mixtures to integrate them into new materials which may appropriately be termed composite materials. Differing asphalts, mineral fillers, and silanes are considered. Also, wide ranges in composition and differing manufacturing methods are described. The report leads through a series of phases in development and characterization of composite products and in the evolution of the concepts and criteria felt by the author to be required for manufacture and control of superior composite binders.

This research study of pavement smoothness measurement was conducted in order to develop and implement an improved highway smoothness construction specification on asphalt concrete pavements. Achieving a higher level of smoothness on highways during construction results in savings to the taxpayer due to reduced wear and tear on vehicles, and longer highway life. Although the current ADOT specification used for highway smoothness addresses localized smoothness problems, it is difficult to administer due to the measurement system used, and provides little impetus to the contractor to improve his quality of work with respect to overall highway smoothness. This study provided data to assist ADOT in developing a new smoothness specification that would provide incentive to contractors to construct smoother pavements and which is easier for ADOT to administer. In order to provide incentive to contractors, a pavement smoothness construction quality control draft specification and associated measurement procedure was produced.

The effects of increased truck loads and higher tire pressures on performance of flexible pavements were investigated in this project. This Volume 1 report presents the research performed and the useful results obtained. Tire pressure studies were performed using both in field measurements and theoretical simulations of the effects of tire pressures on pavements. Volume 2, provides documentation for all of the computer programs developed on the project.