About the research
The Moving Ahead for Progress in the 21st Century Act (MAP-21) requires states to develop and implement a transportation asset management plan (TAMP) for their National Highway System (NHS). This is to improve not only the condition of the bridges in service, but also the functionality of the entire system. Life-cycle cost and risk management analyses are the main analyses expected to be included in a state’s TAMP. For all the NHS bridge projects that receive federal assistance with an estimated total cost of $40 million or more, states are to perform LCCA as part of the value engineering study.
The State of Iowa has started the efforts to include risk management analysis into the TAMP. As a complementary step, this research fills the need for the development of the next generation of the LCCA (Next-Gen LCCA) tool, which will 1) cover the most common types of bridges in Iowa, 2) integrate the available historical data from past inspections to the predictive models, 3) take into account the cost of maintenance and repair during the service life, 4) provide a manageable approach to include indirect costs in the analysis, and 5) deliver the capability to pair with the AASHTOWare BrM Bridge Management System and/or the Structure Inventory and Inspection Management System (SIIMS).