DISCLAIMER: The contents of this report reflect the views of the authors, who are responsible for the facts and accuracy of the information presented herein

A final report submitted to the Infrastructure Technology Institute for TEA-21 funded projects designated A487, W420, and A212 DISCLAIMER: The contents of this report reflect the views of the authors, who are responsible for the facts and accuracy of the information presented herein. This Document is disseminated under the sponsorship of the Department of Transportation University of Transportation Centers Program, in the interest of information exchange. The U.S. Government assumes no liability for the contents or use thereof.