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Pavement Management Performance Modeling: Evaluating the Existing PCI Equations

Researcher(s)

Principal investigators:

Co-principal investigators:

Project status

Completed

Start date: 04/02/13
End date: 12/31/14

Publications

Report: Pavement Management Performance Modeling: Evaluating the Existing PCI Equations (2.77 mb pdf) December 2014

Tech transfer summary: Pavement Management Performance Modeling: Evaluating the Existing PCI Equations (143.06 kb pdf) Dec 2014

Sponsor(s)/partner(s)

Sponsor(s):

About the research

Abstract:

This project included the activities required for the evaluation, development, and enhancement of the Iowa Department of Transportation (DOT) pavement condition information as part of their pavement management system operation. The study covers all of the Iowa DOT’s interstate and primary National Highway System (NHS) and non-NHS system.

A new pavement condition rating system that provides a consistent, unified approach in rating pavements in Iowa is being implemented. The proposed 100-scale system is based on five individual indices derived from specific distress data and pavement properties, and an overall pavement condition index, PCI-2, that combines individual indices using weighting factors.

The different indices cover cracking, ride, rutting, faulting, and friction. The Cracking Index is formed by combining cracking data (transverse, longitudinal, wheel-path, and alligator cracking indices). Ride, rutting, and faulting indices utilize the International Roughness Index (IRI), rut depth, and fault height, respectively.