1. Senior Bridge Engineer, International Bridge Technologies, San Diego, CA 92123–4383; formerly, Research Assistant Professor, Dept. of Civil Engineering, Texas Tech Univ., Lubbock, TX 79409-1023 (corresponding author).
2. Associate Professor and Wilson Chair, Dept. of Aerospace Engineering, Iowa State Univ., Ames, IA 50011-2271; formerly, Dept. of Civil Engineering, Texas Tech Univ.
3. P.W. Horn Professor, Dept. of Civil Engineering, Texas Tech Univ., Lubbock, TX 79409-1023.