1. Ph.D. Candidate, Dept. of Civil and Environmental Engineering, Louisiana State Univ., Baton Rouge, LA 70803.
2. Research Professor, Louisiana Transportation Research Center, Louisiana State Univ., Baton Rouge, LA 70808 (corresponding author).
3. Engineer 6 DCL, Louisiana Dept. of Transportation and Development, Baton Rouge, LA 70804.
4. Geotechnical and Pavement Administrator, Louisiana Transportation Research Center, Baton Rouge, LA 70808.