There are many factors that affect the durability of Portland cement concrete (PCC), including the mix design and the materials used, the quality of construction, and the environment. Durability is not an intrinsic property of the concrete, but instead is related to how the material interacts with the environment. Durability-related deterioration is referred to as materials-related distress (MRD). Common MRDs include those caused by physical processes, such as freezing and thawing, or chemical processes, such as alkali-silica reactivity (ASR) and sulfate attack. This research project was undertaken to determine whether concrete used in the ADOT system is experiencing, or is potentially susceptible to, ASR or sulfate attack, and if so, to what degree.

The city of Sierra Vista and the Arizona Department of Transportation are conducting the Sierra Vista Short-Range Transit Plan Study. This study will result in a new Short-Range Transit Plan (SRTP) for the next five years of transit service for the city of Sierra Vista and Vista Transit, the cityís transit operator. This plan will address changes or improvements to transit service and operations, and strategies for sustainable funding for transit services. The federal funding program that supports Vista Transit operations will be changing in October 2014, and this study will evaluate changes that are needed to comply with the new program requirements and to best leverage federal funds for local transit services.

The Arizona Department of Transportation (ADOT), through the Planning Assistance for Rural Areas (PARA) program, awarded funding to Yuma School District One to prepare the Multimodal Planning Study. The Yuma School District One Multimodal Planning Study will focus on the comprehensive evaluation of the daily transportation habits, needs and safety concerns of 15 elementary and middle schools in the Yuma School District One boundaries.

The purpose of the Yuma School District One Multimodal Planning Study is to enable Yuma School District One to evaluate the existing student drop-off/pickup areas, bus routes, pedestrian routes and bicycle routes at each of the 15 school campus locations to enhance the safety and convenience of access for all modes of transportation for each school site.