1. Associate Professor, Dept. of Civil Engineering, Washington Univ., St. Louis, MO 63130 (corresponding author).
2. Graduate Research Assistant and Doctoral Candidate, Dept. of Civil Engineering, Washington Univ., St. Louis, MO 63130.
3. Assistant Professor, Dept. of Civil Engineering, Izmir Institute of Technology, Izmir, Turkey; formerly, Doctoral Student, Dept. of Civil Engineering, Univ. of Illinois, Urbana, IL 61801.
4. Professor, Dept. of Aeronautical Engineering, Univ. of Illinois, Urbana, IL 61801.
5. Associate Vice President, HNTB Corporation, 715 Kirk Drive, Kansas City, MO 64105.