- Topic Submission
- Discussion & Evaluation
- Development
- Project
Asset Management
Construction
Design
Maintenance & Preservation
Pavements
Is this related to or a continuation of a previous Iowa DOT research project?
No
Does this idea include matching funds?
No
Anticipated Benefits
The use of IPAT in Iowa county pavement management will provide a number of benefits:
- Facilitated decision-making in managing county pavements
- improved overall pavement network performance levels
- advancing pavement preservation and rehabilitation practices
- Integration of ICEASB AppSuite
- Forensic investigation of pavement failures
- Evaluate the RSL resulting from different pavement preservation and rehab strategies
Focus Area
Sustainability / Technology
Research Program
IHRB
Project Title
Iowa Pavement Analysis Technique
Project Number
TR-740
Contracted Agency
Iowa State University
Project Champion
Principal Investigator
Funding Program
Iowa Highway Research Board
Project Funding
$250,000
Project Funding Including External Sources
$250,000
Partner Agencies
Iowa County Engineers Association Service Bureau
Iowa Counties
Iowa Counties
Project Start Date
01/01/2018
Current Project End Date
06/30/2021
Project Abstract
Recent federal legislation requires state highway agencies (SHAs) and local road agencies to utilize performance-based approaches in their pavement management decision-making processes. The use of a remaining service life (RSL) model would be one such performance-based approach that could facilitate the pavement management decision-making process. This study developed a Microsoft Excel macro and Visual Basic for Applications (VBA)-based Iowa Pavement Analysis Techniques (IPAT) automation tool that Iowa county engineers can use to estimate the project- and network-level pavement performance and RSL. To address this aim, statistics and artificial neural network (ANN)-based pavement performance and RSL models were developed using pavement structural features, traffic, construction history, and pavement performance records obtained from the Iowa Department of Transportation (DOT) Pavement Management Information System (PMIS) and the Iowa county agencies’ database. The accuracy of the models was evaluated using the real database representing Iowa county pavement systems. The IPAT tool provides a series of options for four pavement types representing Iowa county pavement systems—jointed plain concrete pavement (JPCP), asphalt concrete (AC) pavement, AC over JPCP, and portland cement concrete (PCC) overlay—to estimate RSL through different approaches based on various conditions and distress data availability from an individual county. The IPAT tool is expected to be used as part of performance-based pavement management strategies and to significantly help decision-makers facilitating maintenance and rehabilitation decisions for better prioritization and allocation of resources.
Project Complete Date
07/30/2021
Project Deliverables
Media & Presentations
Final Report Abstract
Recent federal legislation requires state highway agencies (SHAs) and local road agencies to utilize performance-based approaches in their pavement management decision-making processes. The use of a remaining service life (RSL) model would be one such performance-based approach that could facilitate the pavement management decision-making process. This study developed a Microsoft Excel macro and Visual Basic for Applications (VBA)-based Iowa Pavement Analysis Techniques (IPAT) automation tool that Iowa county engineers can use to estimate the project- and network-level pavement performance and RSL. To address this aim, statistics and artificial neural network (ANN)-based pavement performance and RSL models were developed using pavement structural features, traffic, construction history, and pavement performance records obtained from the Iowa Department of Transportation (DOT) Pavement Management Information System (PMIS) and the Iowa county agencies’ database. The accuracy of the models was evaluated using the real database representing Iowa county pavement systems. The IPAT tool provides a series of options for four pavement types representing Iowa county pavement systems—jointed plain concrete pavement (JPCP), asphalt concrete (AC) pavement, AC over JPCP, and portland cement concrete (PCC) overlay—to estimate RSL through different approaches based on various conditions and distress data availability from an individual county. The IPAT tool is expected to be used as part of performance-based pavement management strategies and to significantly help decision-makers facilitating maintenance and rehabilitation decisions for better prioritization and allocation of resources.
Project Champion
Technical Advisory Committee
Project Manager
Delivering targeted solutions for Iowa's transportation future.
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