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Coordinating, Developing, and Delivering Highway Transportation Innovations

 
REPORT
This report is an archived publication and may contain dated technical, contact, and link information
Publication Number:  FHWA-HRT-13-050    Date:  November 2013
Publication Number: FHWA-HRT-13-050
Date: November 2013

 

Pavement Remaining Service Interval Implementation Guidelines

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FOREWORD

Many important decisions are necessary in order to successfully provide and manage a pavement network. At the heart of this process is the prediction of needed future construction events. One approach to providing a single numeric on the condition of a pavement network is the use of pavement remaining service life (RSL). However, many issues exist with the current RSL terminology and resulting numeric that complicate proper interpretation, interagency data exchange, and use. A major source of uncertainty in the current RSL definition is the use of the term "life" to represent multiple points in the pavement construction history. The recommended path to consistency involves adopting terminology of time remaining until a defined construction treatment is required (i.e., RSL is replaced by remaining service interval (RSI)). The term "RSI" has the ability to unify the outcome of different approaches to determine needs by focusing on when and what treatments are needed and the service interruption created. This report provides guidelines for implementing the RSI concept as a replacement to the current remaining life terminology for pavements. The RSI concept is broken down into a series of steps that follow a logical progression. Examples of the concept are presented using pavement engineering methodologies in current use. Suggestions are also provided based on the results of the RSI process. While this report focuses on pavements, it is also applicable to other types of transportation infrastructure. A companion report presents the framework for replacing the current RSL terminology with one based on more exact construction event terms.(1) This report is intended for use by pavement managers and pavement investment decisionmakers across the United States.

Jorge E. Pagán-Ortiz
Director, Office of Infrastructure
Research and Development

Notice

This document is distributed under the sponsorship of the U.S. Department of Transportation in the interest of information exchange. The U.S. Government assumes no liability for its contents or use thereof. This report does not constitute a standard, specification, or regulation.

The U.S. Government does not endorse products or manufacturers. Trade and manufacturers’ names appear in this report only because they are considered essential to the object of the document.

 

Quality Assurance Statement

The Federal Highway Administration (FHWA) provides high-quality information to serve Government, industry, and the public in a manner that promotes public understanding. Standards and policies are used to ensure and maximize the quality, objectivity, utility, and integrity of the information. FHWA periodically reviews quality issues and adjusts its programs and processes to ensure continuous quality improvements.

 

Technical Report Documentation Page

1. Report No.

FHWA-HRT-13-050

2. Government Accession No. 3 Recipient's Catalog No.
4. Title and Subtitle

Pavement Remaining Service Interval Implementation Guidelines

5. Report Date

November 2013

6. Performing Organization Code
7. Author(s)

Gary E. Elkins, Gonzalo R. Rada, Jonathan L. Groeger, and Beth Visintine

8. Performing Organization Report No.

 

9. Performing Organization Name and Address

AMEC Environment and Infrastructure, Inc.
12000 Indian Creek Court, Suite F
Beltsville, MD 20705-1242

10. Work Unit No. (TRAIS)

11. Contract or Grant No.

DTFH61-08-C-00033

12. Sponsoring Agency Name and Address

Office of Infrastructure Research and Development
Federal Highway Administration
6300 Georgetown Pike
McLean, VA 22101-2296

13. Type of Report and Period Covered

Implementation Guidelines
October 2009–May 2012

14. Sponsoring Agency Code

 

15. Supplementary Notes

The Contracting Officer’s Representative (COR) was Nadarajah Sivaneswaran, HRDI-20.

16. Abstract

Many important decisions are necessary in order to effectively provide and manage a pavement network. At the heart of this process is the prediction of needed future construction events. One approach to providing a single numeric on the condition of a pavement network is the use of pavement remaining service life (RSL). However, many issues exist with the current RSL terminology and resulting numeric that complicate proper interpretation, interagency data exchange, and use. A major source of uncertainty in the current RSL definition is the use of the term "life" to represent multiple points in the pavement construction history. The recommended path to consistency involves adopting terminology of time remaining until a defined construction treatment is required (i.e., RSL is replaced by remaining service interval (RSI)). The term "RSI" has the ability to unify the outcome of different approaches to determine needs by focusing on when and what treatments are needed and the service interruption created. This report provides step-by-step guidelines for implementing the RSI terminology. A companion report presents the framework for replacing the current RSL terminology with one based on more exact construction event terms.(1)

17. Key Words

Pavement remaining service life, Pavement remaining life, Pavement remaining service interval, Pavement construction events, Pavement construction triggers, Pavement threshold limits, Pavement performance expectancy curves, Pavement data collection, Pavement strategy selection, Repairable system

18. Distribution Statement

No restrictions. This document is available to the public through the National Technical Information Service, Springfield, VA 22161

19. Security Classification
(of this report)

Unclassified

20. Security Classification
(of this page)

Unclassified

21. No. of Pages

62

22. Price
Form DOT F 1700.7 Reproduction of completed page authorized

 

SI* (Modern Metric) Conversion Factors

 

TABLE OF CONTENTS

 

LIST OF FIGURES

 

LIST OF TABLES

LIST OF ABBREVIATIONS

AADTAverage annual daily traffic
AASHTOAmerican Association of State Highway and Transportation Officials
CPRConcrete pavement restoration
FHWAFederal Highway Administration
FNFriction number
FWDFalling weight deflectometer
GPRGround penetration radar
HMAHot mix asphalt
HPMS Highway Performance Monitoring System
IRIInternational Roughness Index
JPCPJointed plain concrete pavement
LCCLife-cycle cost
MEPDGMechanistic-Empirical Pavement Design Guide
NCDCNational Climate Data Center
PCC Portland cement concrete
PCIPavement Condition Index
PHTPavement health track
PMSPavement management system
PSIPresent Serviceability Index
PSRPavement serviceability rating
RSIRemaining service interval
RSLRemaining service life
RNRide number
SHAState highway agency
SMPSeasonal monitoring program
SNStructural number
TSDTraffic speed deflectometer
WIMWeigh-in-motion

EXECUTIVE SUMMARY

The remaining service life (RSL) concept has been around for decades and is well entrenched in the pavement community. It is used at all levels of the pavement management decisionmaking process to plan for future field construction events. However, there is no single, clear, widely accepted definition of RSL. Moreover, there is a great deal of uncertainty associated with the definition, especially with the use of the term "life" to represent different points in a pavement’s construction history. In addition, "life" is interpreted differently by stakeholders.

To overcome the RSL shortcomings, this report introduces terminology that removes the word "life" from the lexicon. Instead, the new terminology, known as the remaining service interval (RSI), introduces the concept of time remaining until a defined construction event is required. Pavements are comprised of interrelated structural parts that can be maintained, preserved, restored, rehabilitated, or reconstructed to serve the intended transportation needs.

The RSI concept does not provide an alternative to assessing the health of the network or making decisions about where to spend the available funds. It simply provides a clear terminology and a logical process that will create consistent construction event-based terminology and understanding (i.e., types of construction events and the timing of those events within the concept of life-cycle cost (LCC), risk analyses, and other prioritization approaches based on streams of future construction events and benefits to facility users).