1. Ph.D. Student, Institute for Sustainability and Innovation in Structural Engineering, School of Engineering, Univ. of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal (corresponding author).
2. Professor and Director, Center for Transportation Infrastructure Systems, Univ. of Texas at El Paso, 500 W. University Ave., El Paso, TX 79968.
3. Professor and Vice-Dean, Institute for Sustainability and Innovation in Structural Engineering, School of Engineering, Univ. of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal.