1. Eminent Scholar Emeritus, Del E. Webb School of Construction, Arizona State Univ., P.O. Box 6700, Chandler, AZ 85246 (corresponding author).
2. Research Specialist, Center for Transportation Infrastructure Systems, College of Engineering, Univ. of Texas at El Paso, TX 79968.
3. Professor, Departamento de Ingeniería Civil, Universidad de Piura, Piura, Perú.
4. Associate Professor of Practice, Myers-Lawson School of Construction, Virginia Polytechnic Institute and State Univ., Blacksburg, VA 24061.
5. Professor, Dept. of Civil, Construction, and Environmental Engineering, Iowa State Univ., Ames, IA 50011.