Footprint Design Manual for Local Roads

Book excerpt: This book examines design guidance available for resurfacing, restoration, and rehabilitation (RRR) projects. Resurfacing, restoration, and rehabilitation work includes placement of additional surface material and/or other work necessary to return an existing roadway, including shoulders, bridges, the roadside, and appurtenances, to a condition of structural and functional adequacy, according to the Code of Federal Regulations. Drawing primarily on case studies of current RRR practices and analyses of safety cost-effectiveness, Footprint Design Manual for Local Roads recommends practices that encompass the entire RRR process, but with a special focus on design. Engineering judgment based on local conditions is paramount in fulfilling the tasks to improve an existing roadway and to improve safety.