1. Puerto Rico Department of Transportation and Public Works, P.O. Box 41269, San Juan, PR 00940
2. DMJM+ HARRIS, 398 Jesús T. Piñero Avenue, San Juan, PR 00918
3. Department of Civil Engineering, University of Puerto Rico, P.O. Box 9041, Mayagüez, PR 00681-9041
4. Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139