About the research
The Moving Ahead for Progress in the 21st Century (MAP-21) is a milestone for the U.S. economy and the nation’s surface transportation program. It contains three major provisions, which, when combined, require that states develop a far-reaching performance-based management program for pavements and roads. In addition, the AASHTO Standing Committee on Performance Management
(SCOPM) Task Force on “Performance Measure Development, Coordination and Reporting” came out with several recommendations for the national-level performance measures and target setting for pavements. However, such condition measurements do not have a time element that tells “how long” a pavement will remain in a particular condition or how pavement performance may change over time, so pavement engineers have a new need for a tool that can tell the time when preservation and rehabilitation are required for given road sections.
So, the primary objective of this research is to develop an Iowa Pavement Analysis Technique (IPAT) tool for Iowa county pavement management and decision-making. Specific objectives established to achieve this primary objective include the following:
- Find the best way to model a pavement’s life time and make predictions as to when it will reach the end of its service lifetime (arrive at minimum service level)
- Take into consideration all available data such as pavement history and structure, materials, traffic, truck volumes, local development, etc., for model development
- Be able to absorb and integrate condition data from multiple sources such as the Iowa Pavement Management Program (IPMP), engineering field assessments, inspector team distress evaluations, etc.
- Be able to compute the remaining service life (RSL) for every paved segment and provide a miles vs. RSL tally
- Develop a methodology supporting predictive and consequence analysis