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Created2016-08
Description
Instead of going to landfills, certain waste materials from industry and building construction can be recycled in transportation infrastructure projects, such as roadway paving. The beneficial use of waste materials in the construction of transportation infrastructure results in environmental benefits, as well as economic savings over the pavement life cycle.

Instead of going to landfills, certain waste materials from industry and building construction can be recycled in transportation infrastructure projects, such as roadway paving. The beneficial use of waste materials in the construction of transportation infrastructure results in environmental benefits, as well as economic savings over the pavement life cycle. This study focused on the use of waste--i.e. reclaimed asphalt pavement (RAP), recycled asphalt shingles (RAS), ground tire rubber (GTR), recycled concrete aggregate (RCA), construction and demolition waste (CDW), and mine spoil as raw materials for building transportation infrastructure in Arizona. Technical feasibility, availability, and economics were considered in making recommendations regarding expanding the use of the most-promising materials. Recommendations included targeting slight increases in the RAP replacement level (especially in non-surface hot-mix layers and in unbound base and subbase layers), increasing use of GTR through terminal blending, and increasing use of RCA as base and subbase. Other opportunities identified for further investigation include significant increases in RAP replacement level in hot mix asphalt, use of RCA to replace virgin aggregate in new concrete, and facilitation of the use of CDW in some markets. Further research is encouraged on the use of construction and other waste materials to improve the performance of these materials to reduce risk and improve cost effectiveness.
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Created2005-03-04
Description

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

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

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Created2011-12
Description

Swift Trail Parkway (State Route [SR] 366), an Arizona Scenic Byway, is in southeastern Arizona in Graham County ... The road begins outside Safford, at the base of Mount Graham, and continues up the mountain to Riggs Flat Lake ... Officially, the parkway's limits are milepost (MP) 116, 2.3 miles

Swift Trail Parkway (State Route [SR] 366), an Arizona Scenic Byway, is in southeastern Arizona in Graham County ... The road begins outside Safford, at the base of Mount Graham, and continues up the mountain to Riggs Flat Lake ... Officially, the parkway's limits are milepost (MP) 116, 2.3 miles beyond the intersection of US 191 and SR 366, to MP 142. However ... the plan study area encompasses the remaining portion of road (5.8 miles) to the Riggs Flat Lake turnoff (Forest Road [FR] 287)