1. Senior Principal Engineer, AMEC Foster Wheeler Environment & Infrastructure, Inc., 12000 Indian Creek Court, Suite F, Beltsville, MD 20705.
2. Professor, Dept. of Civil Engineering, Univ. of Texas at El Paso, 500 W. University Ave., El Paso, TX 79968.
3. Professor, Dept. of Civil and Environmental Engineering, Univ. of Nevada–Reno, 1664 N. Virginia St., Reno, NV 89557.
4. Research Engineer, Turner Fairbank Highway Research Center, Engineering and Software Consultants, Inc., 6300 Georgetown Pike, McLean, VA 22101.
5. Senior Engineer, AMEC Foster Wheeler Environment & Infrastructure, Inc., 12000 Indian Creek Court, Suite F, Beltsville, MD 20705.
6. Graduate Student, Dept. of Civil and Environmental Engineering, Univ. of Nevada–Reno, 1664 N. Virginia St., Reno, NV 89557.
7. Graduate Student, Dept. of Civil Engineering, Univ. of Texas at El Paso, 500 W. University Ave., El Paso, TX 79968 (corresponding author).