1. Assistant Professor, Dept. of Civil and Environmental Engineering, West Virginia Univ., Morgantown, WV 26506 (corresponding author).
2. Ph.D. Candidate, Division of Construction Engineering and Management, Purdue Univ., West Lafayette, IN 47907.
3. Research Engineer, Indiana Dept. of Transportation, Office of Research and Development, 1205 Montgomery St., West Lafayette, IN 47906.
4. Professor and Head, Division of Construction Engineering and Management, Purdue Univ., West Lafayette, IN 47907.