DOCSLIB.ORG

ROAD INSPECTION MANUAL a Risk-Based Approach to Managing Road Defects

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
ROAD INSPECTION MANUAL a Risk-Based Approach to Managing Road Defects ROADS AND TRANSPORT DIRECTORATE ROAD INSPECTION MANUAL A risk-based approach to managing road defects NSW & ACT Institute of Public Works Engineering (NSW Division) Limited Roads & Transport Directorate MANAGE ROAD DEFECTS MANUAL First Published 2021 © IPWEA NSW and ACT 2021 This work is copyright. Apart from any use as permitted under the Copyright Act 1968, no part may be reproduced by any process without the prior written permission of IPWEA NSW and ACT. National Library of Australia Cataloguing in-Publication data: ISBN 978-0-6451183-0-8 Project Manager: Arjan Rensen, Manager Roads and Transport Directorate Manual prepared by WSP: Greg Evans Paul Robinson Matt Taylor Laurence Origlia Reference group: Geoff Paton, Blayney Shire Council Aaron Dunne, Eurobodalla Shire Council Masoud Mohammadi, City of Canterbury Bankstown Chris Worrell, Mid-Western Regional Council Clint Fitzsummons, Nambucca Shire Council Published by: Institute of Public Works Engineering (NSW Division) Limited Level 12, 447 Kent Street Sydney NSW 2000 Phone: +61 2 8267 3000 Fax: +61 2 8267 3070 Email: [email protected] https://www.roadsdirectorate.org.au/ IPWEA NSW and ACT believes this publication to be correct at the time of printing and does not accept responsibility for any consequences arising from the use of information herein. Table of Contents 1 Introduction 1 1.1 General 2 1.2 Background 2 1.3 Coverage 2 1.4 Scope 3 1.5 Objectives of the manual 3 1.6 Roads and Transport Directorate 4 1.7 AUS-SPEC 4 1.8 Statewide Mutual 5 2 IPWEA Functional Road Classification 7 3 Road Network Inspections 9 3.1 Inspection requirements 10 3.1.1 Routine inspections 10 3.1.2 Prompted inspections 10 3.1.3 Inspection framework 10 3.2 Inspection records 11 3.3 Information management 12 3.4 Inspection process 12 4 Defect types and intervention standards 13 5 Risk Management 17 6 Risk based defect priority scoring system 19 6.1 Defect priority score 20 6.1.1 Road score 20 6.1.2 Defect score 21 6.1.3 Defect priority score 23 6.2 Council Road Asset Inspection Framework Tool 23 APPENDIX A IPWEA Functional Road Hierarchy 25 APPENDIX B Illustrated defects guide 27 APPENDIX C Road Asset Inspection Framework Tool 37 A RISK-BASED APPROACH TO MANAGING ROAD DEFECTS i 1. INTRODUCTION 1. Introduction 1.1 General Local government in NSW is responsible for over 165,000km of roads, including local and regional roads. Road operators have a duty of care to make sure road and transport assets are fit for purpose and safe to use by the community. Inspecting road and transport assets to identify defects and managing known defects are an essential part of the responsibility of the road operator. The purpose of this manual is to provide technical guidance and training to improve the skills of council staff involved in the inspection and management of local and regional road assets and to assist councils to maintain quality infrastructure to the community. The manual presents councils with the background and methodology for carrying out road inspections and managing hazards and defects across their council road network. To manage liability issues related to road defects it is essential for councils to have qualified road inspectors and a system to manage defects identified. The manual is aligned with the guidance and training previously developed by Roads and Maritime Services NSW (RMS) and recently updated by Transport for NSW (TfNSW). 1.2 Background A Lismore Coroner’s Court ruling in 2011, based on the investigation of a fatal crash on the Bruxner Highway, recommended that “a system be put in place whereupon the RMS is notified by relevant councils of the name and qualifications of employees charged with road inspections and that no such person be employed for that purpose without prior RMS approval”. The Coroner further clarified that the recommendation pertains to all councils who perform work for RMS pursuant to a Road Maintenance Council Contract (RMCC). Since then, training courses have been developed by RMS and council asset inspectors are to undertake the training as part of the RMCC contractual obligations. The training is required for all asset inspectors with regular refresher courses when the relevant specifications change ensuring the training is current and relevant. Audits of the RMCC include checks that the training has been completed to ensure councils meet the obligations of the RMCC and the Coroner’s recommendations. If a council has an RMCC contract then it must ensure its asset inspectors are trained and competent. This requirement will be satisfied if the asset inspectors have undertaken the RMS training and it is kept up to date. Audits of the RMCC contract include checks on this requirement being met. Training currently provided by TfNSW is provided for asset inspectors in councils with an RMCC contract and this training is applicable to State Roads only. 1.3 Coverage The Manual covers inspections of roads managed by local government. Roads managed by local government are classified as local or regional roads. 2 A RISK-BASED APPROACH TO MANAGING ROAD DEFECTS Table 1-1: NSW Road Network Road Length in km Sealed Unsealed Total Regional Roads1 15,192 3,206 18,398 Local Roads 68,469 78,480 146,949 Total Council Roads 83,661 81,685 165,347 State Roads 18,000 3,000 21,000 Total NSW Roads 101,661 84,685 186,346 Source: IPWEA NSW Road Asset Benchmarking Project, 2017 Transport for NSW (TfNSW) utilises Road Maintenance Council Contracts (RMCC) to establish a collaborative contractual relationship between TfNSW and council to provide maintenance services on the State road network. TfNSW provides mandatory training for road inspectors employed by councils to be sufficiently trained to conduct inspections on state roads under the RMCC. This manual provides similar guidance to assist council staff to inspect the council road network. The terminology used in this manual is consistent with the terminology used by TfNSW in its Routine Maintenance Specification (M3) and associated training. 1.4 Scope The Manual addresses the following for each road class of council roads: • Inspection intervals • Defect and prescribed actions • Trigger levels for maintenance and repair • Assets included The IPWEA Condition Assessment and Asset Performance Guidelines, Practice Note 9 2015, Road Pavements (Visual Assets), introduces a set of important themes which are of direct relevance to the Manual (www.ipwea.org). 1.5 Objectives of the manual The manual is required to bring a degree of state-wide harmonisation in the method by which road hazard and defect information is recorded and acted upon across council road networks. This helps in establishing a more consistent risk-based approach to duty of care obligations. The manual has the following key objectives: • To monitor the condition of assets and determine when maintenance intervention is likely to be required. • To implement systems and processes that promote consistency in the identification and rectification of defects across the road network. • To establish a process that will effectively manage the identification and rectification of hazards. There are a wide range of statutory requirements relating to roads. Asset managers must be aware of the legislation and regulations applicable to their circumstances. A RISK-BASED APPROACH TO MANAGING ROAD DEFECTS 3 The community relies on the service providers to make sure that the road facilities are fit for purpose and safe to use. This is part of their stewardship role including their legal and regulatory obligations and their general obligation to the public at large. This involves an obligation to act diligently, with appropriate expertise to provide for public safety, environment protection and financial prudence. It has a bearing on the frequency and scope of inspections. It will determine when and what actions need to be initiated to achieve the desired outcomes. This is largely a risk management issue. Council staff and contractors need to have an understanding of potential exposure to claims of negligence in failing to maintain the roadway in a safe and proper manner. The old ‘highway rule’ considered the issues of malfeasance, nonfeasance and misfeasance. Malfeasance occurs when the act is intentional, whereas misfeasance is completed accidentally. Nonfeasance (not doing something) and misfeasance (doing something wrong) are very similar terms and courts often have a difficult time differentiating them. They both denote a failure to act when action is required. 1.6 Roads and Transport Directorate The Roads and Transport Directorate is a joint initiative between the Institute of Public Works Engineering Australasia NSW Division and Local Government NSW to optimise roads and transport outcomes. The purpose of the Directorate is to support our member councils to deliver an improved local road and transport network. A network that meets the future needs of the community, industry and economy. A network that is safer for all users and that meets movement and place expectations from local communities. A network that uses resources wisely and is mindful of its impact on the environment. Member councils are collectively responsible for the management of over 165,000 kilometres of roads valued at more than $70 billion representing the single largest community asset in New South Wales. To succeed in this task, the Directorate undertakes leading-edge road and transport research which underpins our input to policy development, our advocacy initiatives and our published guidance on the design, construction and management of the road network and its associated infrastructure. 1.7 AUS-SPEC AUS-SPEC covers planning and design, tendering, contract preliminaries, construction, maintenance, and operations of local government assets. AUS-SPEC provides standard specification to be used by councils to develop their own specifications for the construction and maintenance of council assets, including road and transport assets.
Load more

Recommended publications
  • Pavement Management Program
    STANDARD OPERATING GUIDELINES OPERATING STANDARD PAVEMENT MANAGEMENT PROGRAM May 2013 Page 1 of 93 I. Contents INTRODUCTION .................................................................................................................................................... 2 PAVEMENT PRESERVATION ................................................................................................................................. 5 SYSTEM METRICS ................................................................................................................................................. 7 TREATMENT LIFE EXTENSION ............................................................................................................................... 9 NETWORK HEALTH ............................................................................................................................................... 9 OPTIMIZATION ................................................................................................................................................... 10 PROJECT IDENTIFICATION AND SELECTION ........................................................................................................ 13 CRACK SEALING TREATMENT ............................................................................................................................. 28 FOG SEAL ............................................................................................................................................................ 30 LONGITUDINAL JOINT STABILIZATION
    [Show full text]
  • Review of Remote Sensing Methodologies for Pavement Management and Assessment
    Eur. Transp. Res. Rev. (2015) 7: 7 DOI 10.1007/s12544-015-0156-6 ORIGINAL PAPER Review of remote sensing methodologies for pavement management and assessment E. Schnebele · B. F. Tanyu · G. Cervone · N. Waters Received: 10 October 2013 / Accepted: 9 February 2015 / Published online: 7 March 2015 © The Author(s) 2015. This article is published with open access at SpringerLink.com Abstract challenges associated with transportation assessment in the Introduction Evaluating the condition of transportation aftermath of major disasters. infrastructure is an expensive, labor intensive, and time Conclusion The use of remote sensing techniques offers consuming process. Many traditional road evaluation meth- new potential for pavement managers to assess large areas, ods utilize measurements taken in situ along with visual often in little time. Although remote sensing techniques can examinations and interpretations. The measurement of dam- never entirely replace traditional geotechnical methods, they age and deterioration is often qualitative and limited to do provide an opportunity to reduce the number or size of point observations. Remote sensing techniques offer non- areas requiring site visits or manual methods. destructive methods for road condition assessment with large spatial coverage. These tools provide an opportunity Keywords Road assessment · Remote sensing · Civil for frequent, comprehensive, and quantitative surveys of engineering transportation infrastructure. Methods The goal of this paper is to provide a bridge between traditional procedures for road evaluation and 1 Introduction remote sensing methodologies by creating a comprehensive reference for geotechnical engineers and remote sensing The importance of incorporating remote sensing into experts alike. geotechnical and geological engineering practices has long Results A comprehensive literature review and survey of been recognized by the United States (US) National current techniques and research methods is provided to Research Council [95].
    [Show full text]
  • Sharing the Spirit of Innovation
    00_TRN_284_TRN_284 3/7/13 2:59 PM Page C1 JANUARY–FEBRUARY 2013 NUMBER 284 TR NEWS Sharing the Spirit of Innovation Examples from the States Plus: Solving Highway Congestion Lessons for Climate Change Mapping Natural Hazmats 00_TRN_284_TRN_284 3/7/13 2:59 PM Page C2 TRANSPORTATION RESEARCH BOARD 2013 EXECUTIVE COMMITTEE* Chair: Deborah H. Butler, Executive Vice President, Planning, and CIO, Norfolk Southern Corporation, Norfolk, Virginia National Academy of Sciences Vice Chair: Kirk T. Steudle, Director, Michigan Department of Transportation, Lansing National Academy of Engineering Executive Director: Robert E. Skinner, Jr., Transportation Research Board Institute of Medicine National Research Council Victoria A. Arroyo, Executive Director, Georgetown Climate Center, and Visiting Professor, Georgetown University Law Center, Washington, D.C. The Transportation Research Board is one Scott E. Bennett, Director, Arkansas State Highway and Transportation Department, Little Rock of six major divisions of the National William A. V. Clark, Professor of Geography (emeritus) and Professor of Statistics (emeritus), Department of Geography, University of California, Los Angeles Research Council, which serves as an James M. Crites, Executive Vice President of Operations, Dallas–Fort Worth International Airport, Texas independent adviser to the federal gov- John S. Halikowski, Director, Arizona Department of Transportation, Phoenix ernment and others on scientific and Paula J. C. Hammond, Secretary, Washington State Department of Transportation, Olympia technical questions of national impor- Michael W. Hancock, Secretary, Kentucky Transportation Cabinet, Frankfort tance, and which is jointly administered Susan Hanson, Distinguished University Professor Emerita, School of Geography, Clark University, Worcester, by the National Academy of Sciences, the Massachusetts National Academy of Engineering, and Steve Heminger, Executive Director, Metropolitan Transportation Commission, Oakland, California the Institute of Medicine.
    [Show full text]
  • Analysis and Recommendations for Street Network
    Analysis and Recommendations for Street Network Bountiful City September 2017 Copyright © 2017 By the Utah LTAP Center. All rights reserved. Printed in the United States of America. No part of this document may be used or reproduced in any manner whatsoever without written permission except in the case of brief quotations embodied in critical articles and reviews. For information, address Utah LTAP Center; Department of Civil and Environmental Engineering; 4111 Old Main Hill; Logan, Ut 84322-4111. Utah LTAP Center 09/21/17 Table of Contents Page Sections INTRODUCTION 1 INVENTORY OF ROAD NETWORK 3 PAVEMENT TYPE DISTRIBUTION OF THE ROAD NETWORK 6 PAVEMENT CONDITION SURVEY 7 ASPHALT ROAD NETWORK 7 CONCRETE ROAD NETWORK 7 ASPHALT PAVEMENT DESIGN & PERFORMANCE 8 MAJOR CAUSES OF ASPHALT PAVEMENT DISTRESS 10 PAVEMENT DISTRESS SURVEY & ANALYSIS 12 CONCRETE ROAD NETWORK 26 DEVELOPMENT OF PRESERVATION STRATEGIES AND RECOMMENDED TREATMENTS 29 ASSESSMENT OF CURRENT STREET MAINTENANCE PROGRAM FUNDING 33 ASPHALT ROAD NETWORK 33 DEVELOPMENT OF RECOMMENDED PAVEMENT PRESERVATION PROGRAM 37 ASPHALT ROAD NETWORK 37 IMPLEMENTATION OF PAVEMENT MANAGEMENT SYSTEM 40 IMPORTANCE OF FEEDBACK 41 SUMMARY OF FINDINGS AND RECOMMENDATIONS 42 FINDINGS 42 COMPARISON OF SURVEYS 42 RECOMMENDATIONS 43 - i - Utah LTAP Center 09/21/17 Figures Figure 1. Pavement Management Process Diagram _______________________________________ 2 Figure 2. Distribution of Street Network by Functional Classification _______________________ 5 Figure 3. Percentages of Asphalt and Concrete Streets by Surface Area ______________________ 6 Figure 4. Pavement Performance Curve ________________________________________________ 8 Figure 5. Condition Rating Sheet _____________________________________________________ 13 Figure 6. Governing Distress Rating Distribution for Asphalt Roads _______________________ 16 Figure 7. Governing Distress Rating Distribution for Concrete Roads ______________________ 17 Figure 8.
    [Show full text]
  • Connecticut Begins to Use the Notched Wedge Joint
    Summer 2009 ................................. ................................. ................................. In this Issue Connecticut Begins to Use Connecticut Begins to Use the 1 the Notched Wedge Joint Notched Wedge Joint Work Zone Safety Training 2 for Law Enforcement Longitudinal joints in asphalt pavements are formed between individual From the T2 Center 2 passes of the paver. Ideally, this longitudinal joint is as durable as the rest of Resource Library the asphalt pavement mat and will have a life span comparable to the rest of the pavement. The most common longitudinal joint failure occurs from a crack forming in the longitudinal joint, this is FHWA Urges Road Agencies 4 sometimes referred to as the longitudinal joint to Consider “Top Nine” “opening up”. All longitudinal joints will Life-Saving Strategies eventually crack, but the severity and width of the cracking dictates whether or not stan- 2008 HMA Paving Awards 6 dard pavement maintenance activities such as crack sealing can be effective in preventing further pavement degradation. In some cases, Technology Transfer Center 2009 6 the crack in the longitudinal joint will become Fall Calendar so large that it becomes a safety hazard, as bicycle and motorcycle wheels can fit into and become wedged in the crack. Even if the crack does not become 2009 Technology Transfer Expo 7 large enough to present a safety hazard, the crack will allow water to infiltrate into the pavement structure and ultimately damage it. Technology Transfer Center One of the major causes of asphalt pavement cracking, along with longi- tudinal failure, is the thermal cycling that all pavements experience virtually Request Form 8 everyday.
    [Show full text]
  • Transverse Cracking of Asphalt Pavements
    -. '• Summary Report of Office of Research Transverse Cracking of a Cooperative Analysis and Development by Teams from Washington, D.C. Iowa, Kansas, Nebraska Asphalt Pavements North Dakota and Report No. Oklahoma FHWA-Ts-82-205 Final Report July 1982 itf2_- I OL/-0 US. Department at Transportation Federal Highway Admlnlshallon .. .. ..- FOREWORD This Tech Share summaries the analysis of tranverse cracking in asphalt pavements by a study team from the five States of Iowa, Kansas, Nebraska, North Dakota, and Oklahoma. The report should be of interest to pavement designers and maintenance engineers concerned with the performance of asphalt pavements. Distribution is being made ~ccording to the latest distribution plan. A limited number of additional copies can be obtained while supplies last from the Implementation Division, Construction Materials, and Methods Group HDV-22. ~~~ Director Office of Development \ . NOTIC:P. This document is disseminated under the sponsorship of the Department of Transportation in the interest of information exchange. The United States Government assumes no liability for its contents or use thereof. The contents of this report reflect the views of the contractor, who is responsible for the accuracy of the data presented herein. The contents do not necessarily reflect the official policy of the Department of Transportation. This report does not constitute a standard, specification, or regulation. -~ .. ',..·_ :.. .. · .. \" ..... TRANSVERSE CRACKING OF ASPHALT PAVEMENTS by Iowa Department of Transportation Robert A. Shelquist Edward J. O'Connor Donald D. Jordison Vernon J. Marks Kansas Department of Transportation Rodney G. Maag Harvey E. Wallace Montie W. Baty Nebraska Department of Roads Janis Silenieks Robert J. Wedner Rollie H.
    [Show full text]
  • Asphalt in Pavement Preservation and Maintenance)
    1. Report No. 2. Government Accession No. 3. Recipient's Catalog No. FHWA/TX-11/0-6589-1 4. Title and Subtitle 5. Report Date PAVEMENT REPAIR STRATEGIES FOR SELECTED Published: June 2012 DISTRESSES IN FM ROADWAYS 6. Performing Organization Code 7. Author(s) 8. Performing Organization Report No. Samer Dessouky, Jeong Ho Oh, Mijia Yang, Mohammad Ilias, Report 0-6589-1 Sang Ick Lee, Tom Freeman, Mark Bourland, and Mien Jao 9. Performing Organization Name and Address 10. Work Unit No. (TRAIS) The University of Texas at San Antonio 1 UTSA Circle 11. Contract or Grant No. San Antonio, TX 78249 Project 0-6589 12. Sponsoring Agency Name and Address 13. Type of Report and Period Covered Texas Department of Transportation Technical Report: Research and Technology Implementation Office September 2009–August 2010 P. O. Box 5080 14. Sponsoring Agency Code Austin, Texas 78763-5080 15. Supplementary Notes Project performed in cooperation with the Texas Department of Transportation and the Federal Highway Administration. Project Title: Pavement Repair Strategies for 2R and Routine Maintenance (RMC) Projects URL: http://tti.tamu.edu/documents/0-6589-1.pdf 16. Abstract Expansive soil is considered one of the most common causes of pavement distresses in FM roadways. Depending upon the moisture level, expansive soils will experience changes in volume due to moisture fluctuations from seasonal variations. The objective of this research was to evaluate existing repair projects on selected FM roadways. Those roadways experienced failures in the form of fatigue and rutting in the wheel path, and longitudinal (faulted) cracking including edge cracking. The causes of those failures were mainly linked to high PI expansive soil and narrow pavement.
    [Show full text]
  • Concrete Pavement Field Reference Pre-Paving
    Concrete Pavement Field Reference Pre-Paving Joint layout Subgrades Subbases A practical guide to understanding and troubleshooting: Pre-paving setup Concrete mixture analysis & approval American Concrete Pavement Association Concrete Pavement Field Reference Pre-Paving This publication includes, at the outset, a series of checklists aimed at guiding and assisting with proper procedures. These checklists precede the main content of the field reference to provide a preview of what appears in each section and also to provide some quick references to the entire publication. You can also find these checklists in a printer-friendly layout at: www.pavement.com/fieldreference These are available free of charge for distribution to your paving crews or others who may benefit from these quick and easy-to-use checklists. Again, the checklists are intended to help you with proper procedures. This field reference also includes several cross-references intended to help you find information quickly. General topics are organized by chapters and may be found either by chapter number or in the table of contents. Also, key words are included in an index at the end of this field reference. Of course, if you are looking for information, but still cannot find it, please call on any ACPA technical staff member. American Concrete Pavement Association 5420 Old Orchard Rd., Suite A100 Skokie, IL 60077-1059 (847) 966-ACPA www.pavement.com © 2008 American Concrete Pavement Association All rights reserved. No part of this book may be reproduced in any form without permission in writing from the publisher, except by a reviewer who wishes to quote brief passages in a review written for inclusion in a maga- zine or newspaper.
    [Show full text]
  • Pavement Distress Detection Methods: a Review
    infrastructures Review Pavement Distress Detection Methods: A Review Antonella Ragnoli 1,* , Maria Rosaria De Blasiis 2 and Alessandro Di Benedetto 2 1 Department of Civil, Constructional and Environmental Engineering, Sapienza University of Rome, 00184 Rome, Italy 2 Department of Engineering, Roma Tre University, 00154 Rome, Italy; [email protected] (M.R.D.B.); [email protected] (A.D.B.) * Correspondence: [email protected]; Tel.: +39-0644-585-115 Received: 28 September 2018; Accepted: 17 December 2018; Published: 19 December 2018 Abstract: The road pavement conditions affect safety and comfort, traffic and travel times, vehicles operating cost, and emission levels. In order to optimize the road pavement management and guarantee satisfactory mobility conditions for all road users, the Pavement Management System (PMS) is an effective tool for the road manager. An effective PMS requires the availability of pavement distress data, the possibility of data maintenance and updating, in order to evaluate the best maintenance program. In the last decade, many researches have been focused on pavement distress detection, using a huge variety of technological solutions for both data collection and information extraction and qualification. This paper presents a literature review of data collection systems and processing approach aimed at the pavement condition evaluation. Both commercial solutions and research approaches have been included. The main goal is to draw a framework of the actual existing solutions, considering them from a different point of view in order to identify the most suitable for further research and technical improvement, while also considering the automated and semi-automated emerging technologies. An important attempt is to evaluate the aptness of the data collection and extraction to the type of distress, considering the distress detection, classification, and quantification phases of the procedure.
    [Show full text]
  • Relationships. Responsiveness. Results
    Relationships. 2020 Pavement Condition Study Responsiveness. Final Report Results. Buxton, Maine PREPARED FOR: Town of Buxton 185 Portland Road Buxton, Maine 04093 December 2020 SUBMITTED BY: Gorrill Palmer 707 Sable Oaks Drive Suite 30 So. Portland, ME 04106 207.772.2515 Town of Buxton, Maine Pavement Condition Study Table of Contents Description Page Introduction 1 Data Collection 2 Data Analysis 10 Treatment Alternatives 13 10-Year Roadway Improvement Plans 15 Use of Report 17 Conclusions 18 Appendix A Table 1 Paved Network Inventory – Municipal Road/Section (Alphabetical) Table 2 Paved Network Inventory – Municipal Road/Section (Treatment) Table 3 Costed Repair Options – Municipal Road/Section (Alphabetical) Appendix B 10-Year Roadway Improvement Plan – Option 1: $420,000 Annual Budget 10-Year Roadway Improvement Plan – Option 2: $3M Bond/$420,000 Annual Budget 10-Year Roadway Improvement Plan – Option 3: $6M Bond/$420,000 Annual Budget Appendix C Road Repair Unit Prices Appendix D Field Data Collection Sheet Appendix E Roadway Treatmentp Ma Appendix F Buxton Road Maintenance History Introduction Gorrill Palmer was retained by the Town of Buxton to complete pavement roadway condition assessments for all municipal roadways. The purpose of the study was to assess the pavement condition of the municipal roads and to develop a ten-year plan for improving the pavement conditions. By continuing to complete these pavement evaluations on a regular basis, it is possible for the Town to better gauge how quickly the pavement is deteriorating and, consequently, how best to allocate resources. The following graphic illustrates the ideal timing to complete preventive maintenance before the pavement condition reaches a point where pavement rehabilitation is required.
    [Show full text]
  • Minimizing Reflection Cracking of Pavement Overlays
    92 NATIONAL COOPERATIVE HIGHWAY RESEARCH PROGRAM SYNTHESIS OF HIGHWAY PRACTICE 92 MINIMIZING REFLECTION CRACKING OF PAVEMENT OVERLAYS 91 TRANSPORTATION RESEARCH BOARD NATIONAL RESEARCH COUNCIL TRANSPORTATION RESEARCH BOARD EXECUTIVE COMMITTEE 1982 Officers Chairman DARRELL V MANNING, Director Idaho Transportation Department Vice Chairman LAWRENCE D. DAHMS, Executive Director, Metropolitan Transportation Commission, San Francisco Bay Area Secretary THOMAS B. DEEN, Executive Director, Transportation Research Board Members RAY A. BARNI-JART, Federal Highway Administrator, U.S. Department of Transportation (cx officio) FRANCIS B. FRANCOIS, Executive Director, American Association of State Highway and Transportation Officials (cx officio) WILLIAM J. HARRIS, JR., Vice President for Research and Test Department, Association of American Railroads (cx officio) J. LYNN HELMS, Federal Aviation Administrator, U.S. Department of Transportation (cx officio) THOMAS D. LARSON, Secretary. Pennsylvania Department of Transportation (cx officio, Past Chairman 1981) RAYMOND A. PECK, JR., National Highway Traffic Safety Administrator, U.S. Department of Transportation (cx officio) ARTHUR E. TEELE, JR., Urban Mass Transportation Administrator, U.S. Department of Transportation (cx officio) CHARLEY V. WOOTAN, Director, Texas Transportation institute. Texas A&M University (cx officio, Past Chairman 1980) GEORGE J. BEAN, Director of Aviation, Hillsborough County (Florida) Aviation Authority JOHN R. BORCHERT, Professor, Department of Geography. University of Minnesota RICHARD P. BRAUN, Commissioner, Minnesota Department of Transportation ARTHUR J. BRUEN, JR., Vice President, Continental Illinois National Bank and Trust Company of Chicago JOSEPH M. CLAPP, Senior Vice President, Roadway Express, Inc. ALAN G. DUSTIN, President and Chief Executive Officer, Boston and Maine Corporation ROBERT E. FARRIS, Commissioner, Tennessee Department of Transportation ADRIANA GIANTURCO. Director, California Department of Transportation JACK R.
    [Show full text]
  • Impact of Environmental Factors on Pavement Performance in the Absence of Heavy Loads
    Impact of Environmental Factors on Pavement Performance in the Absence of Heavy Loads PUBLICATION NO. FHWA-HRT-16-084 MARCH 2019 Research, Development, and Technology Turner-Fairbank Highway Research Center 6300 Georgetown Pike McLean, VA 22101-2296 FOREWORD This report documents the analysis of data collected through the Long-Term Pavement Performance program to characterize the impact of environmental factors on pavement performance. The objectives of this analysis were to identify and quantify the effects of environmental factors and pavement design on pavement performance in the absence of heavy loads; develop recommendations for mitigating these effects through effective design, materials selection, and construction; estimate the portion of pavement damage caused by environmental factors; and establish a database of pavement design features, materials properties, and performance to be used in the future for similar analyses. The study showed that, for flexible pavements that have been in service for 15 yr with normal traffic loading, 36 percent of total damage is related to environmental factors (e.g., subgrade and climate variables). For rigid pavements that have been in service for 15 yr with normal traffic loading, 24 percent of total damage is related to environmental factors. Results related to the impact of specific subgrade, climate, traffic, and design factors on pavement performance will be of interest to pavement, materials, and pavement-management engineers concerned with the design, materials properties, and performance of flexible and rigid pavements. Cheryl Allen Richter, Ph.D., P.E. Director, Office of Infrastructure Research and Development Notice This document is disseminated under the sponsorship of the U.S.
    [Show full text]