Development of a Guide for Accommodating Utilities within Highways and Freeways (2023)

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NCHRP Web-Only Document 356: Development of a Guide for Accommodating Utilities within Highways and Freeways Edgar Kraus Kristopher Harbin Cesar Quiroga Texas A&M Transportation Institute San Antonio, TX Conduct of Research Report for NCHRP Project 20-123(06) Submitted November 2022 © 2023 by the National Academy of Sciences. National Academies of Sciences, Engineering, and Medicine and the graphical logo are trademarks of the National Academy of Sciences. All rights reserved. NATIONAL COOPERATIVE HIGHWAY RESEARCH PROGRAM Systematic, well-designed, and implementable research is the most effective way to solve many problems facing state departments of transportation (DOTs) administrators and engineers. Often, highway problems are of local or regional interest and can best be studied by state DOTs individually or in cooperation with their state universities and others. However, the accelerating growth of highway transportation results in increasingly complex problems of wide interest to highway authorities. These problems are best studied through a coordinated program of cooperative research. Recognizing this need, the leadership of the American Association of State Highway and Transportation Officials (AASHTO) in 1962 initiated an objective national highway research program using modern scientific techniques—the National Cooperative Highway Research Program (NCHRP). NCHRP is supported on a continuing basis by funds from participating member states of AASHTO and receives the full cooperation and support of the Federal Highway Administration (FHWA), United States Department of Transportation, under Agreement No. 693JJ31950003. COPYRIGHT INFORMATION Authors herein are responsible for the authenticity of their materials and for obtaining written permissions from publishers or persons who own the copyright to any previously published or copyrighted material used herein. Cooperative Research Programs (CRP) grants permission to reproduce material in this publication for classroom and not-for-profit purposes. Permission is given with the understanding that none of the material will be used to imply TRB, AASHTO, APTA, FAA, FHWA, FTA, GHSA, or NHTSA endorsement of a particular product, method, or practice. It is expected that those reproducing the material in this document for educational and not-for-profit uses will give appropriate acknowledgment of the source of any reprinted or reproduced material. For other uses of the material, request permission from CRP. DISCLAIMER The opinions and conclusions expressed or implied in this report are those of the researchers who performed the research. They are not necessarily those of the Transportation Research Board; the National Academies of Sciences, Engineering, and Medicine; the FHWA; or the program sponsors. The Transportation Research Board does not develop, issue, or publish standards or specifications. The Transportation Research Board manages applied research projects which provide the scientific foundation that may be used by Transportation Research Board sponsors, industry associations, or other organizations as the basis for revised practices, procedures, or specifications. The Transportation Research Board, the National Academies, and the sponsors of the National Cooperative Highway Research Program do not endorse products or manufacturers. Trade or manufacturers’ names appear herein solely because they are considered essential to the object of the report. The information contained in this document was taken directly from the submission of the author(s). This material has not been edited by TRB.

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C O O P E R A T I V E R E S E A R C H P R O G R A M S CRP STAFF FOR NCHRP WEB-ONLY DOCUMENT 356 Christopher J. Hedges, Director, Cooperative Research Programs Waseem Dekelbab, Deputy Director, Cooperative Research Programs, and Manager, National Cooperative Highway Research Program David Jared, Senior Program Officer Clara Schmetter, Senior Program Assistant Natalie Barnes, Director of Publications Heather DiAngelis, Associate Director of Publications Jennifer Correro, Assistant Editor NCHRP PROJECT 20-123(06) PANEL Field of Special Projects Nelson Smith, Maryland Department of Transportation, Hanover, MD (Chair) Patrick Allen, Georgia Department of Transportation, Forest Park, GA Victoria Bever, Arizona Department of Transportation, Phoenix, AZ Gregory Faber, Texas Department of Transportation, Austin, TX Chuck Ferguson, Delaware Department of Transportation, Dover, DE Jennifer McCleve, Kentucky Transportation Cabinet, Frankfort, KY Natalie Parks, InfraMap, Lebanon, IN Wendi Snyder, Ohio Department of Transportation, Columbus, OH Roy Sturgill, Iowa State University, Ames, IA Abby Williamson, Wisconsin Department of Transportation, Madison, WI Julie Johnston, FHWA Liaison Casey Soneira, AASHTO Liaison

iv TABLE OF CONTENTS Summary ..................................................................................................................................................... 1 Chapter 1—Introduction ........................................................................................................................... 2 Research Objective ................................................................................................................................. 2 Study Approach ..................................................................................................................................... 2 Report Organization .............................................................................................................................. 3 Chapter 2—Review of Literature and Relevant Material ..................................................................... 4 Reports and Guidelines ......................................................................................................................... 4 National Cooperative Highway Research Program ...................................................................... 5 Federal Highway Administration Research ................................................................................... 5 Strategic Highway Research Program ............................................................................................ 6 State Departments of Transportation Research ............................................................................. 7 Standards Potentially Applicable to the New Guide ........................................................................ 9 ASCE Standards ................................................................................................................................. 9 ASTM International Standards ...................................................................................................... 10 API Reports, Recommendations, and Guidelines ....................................................................... 10 AWWA Standards ........................................................................................................................... 11 APWA Publications and Manuals ................................................................................................. 11 IEEE Guides ...................................................................................................................................... 11 AASHTO Surveys Applicable to Utility Accommodation ............................................................. 12 Resource Sharing .............................................................................................................................. 12 Encasement ....................................................................................................................................... 13 Wireless and Cellular Network Provider Accommodation ....................................................... 13 Utility Coordination ........................................................................................................................ 14 Utility Definitions and Regulations ............................................................................................... 14 Accommodation Technology ......................................................................................................... 14 Utility Permitting ............................................................................................................................. 15 Utility Relocation ............................................................................................................................. 15 Other .................................................................................................................................................. 16 Documents Provided by NCHRP ...................................................................................................... 16 Wednesday Morning Coffee Break July 17, 2019: What does AASHTO Say About— Longitudinal Utility Installations on Freeways? ......................................................................... 16 Wednesday Morning Coffee Break July 17, 2019: What does AASHTO Say About— Longitudinal Utility Installations in Freeway Medians? ............................................................ 16

v A Policy on the Accommodation of Utilities within Freeway Right of Way ........................... 16 A Guide for the Accommodation of Utilities on Within Highway Right of Way .................. 17 Merged Guide for Accommodating Utilities ............................................................................... 17 Summary of Findings .......................................................................................................................... 17 Chapter 3—Prioritized Updates for the New Guide .......................................................................... 18 Structure of the New Guide ................................................................................................................ 18 Structure of the AASHTO Policy on the Accommodation of Utilities within Freeway Right- of-Way ............................................................................................................................................... 18 Structure of the AASHTO Guide for Accommodating Utilities within Highway Right-of- Way .................................................................................................................................................... 19 Priorities for Modifications of the New Guide ................................................................................ 20 Proposed Structure of the AASHTO Guide for Accommodating Utilities within Highways and Freeways .................................................................................................................................... 20 Chapter 4—Stakeholder Peer Exchange ............................................................................................... 23 Peer Exchange Participants ................................................................................................................. 23 Peer Exchange Activities ..................................................................................................................... 24 Findings of the Peer Exchange ........................................................................................................... 24 Chapter 1, General ........................................................................................................................... 25 Chapter 2, General Accommodation Factors ............................................................................... 26 Chapter 3, Utility Accommodation on Fully Controlled-Access Highways ........................... 28 Chapter 4, Utility Accommodation on Highway Right-of-Way (Non-controlled Access) .... 29 Chapter 5, Utility Accommodation on Multi-Access Right-of-Way (Partially Controlled Access) ............................................................................................................................................... 31 Chapter 6, Appendices .................................................................................................................... 32 Topics for Further Discussion ........................................................................................................ 32 Chapter 5—Stakeholder Workshop ....................................................................................................... 33 Workshop Overview ........................................................................................................................... 33 Participant Comments ......................................................................................................................... 33 Chapter 6—Proposed Structure and Content of the New Guide ...................................................... 36 Chapter 7—Summary .............................................................................................................................. 40 Literature Review ................................................................................................................................. 40 Stakeholder Peer Exchange ................................................................................................................. 40 Stakeholder Workshop ........................................................................................................................ 41 Development of the Final New Guide .............................................................................................. 41 Future Guide Updates and Additional Research Needs ................................................................ 41 References ................................................................................................................................................. 45 Appendix A—Peer Exchange Agenda .................................................................................................. 52

vi Virtual Peer Exchange for the Development of the New AASHTO A Guide for Accommodating Utilities within Highways and Freeways ............................................................................................... 52 Day 1, 11/18/2021 ........................................................................................................................... 52 Day 2, 11/19/2021 ........................................................................................................................... 52 Appendix B—Peer Exchange Presentations ......................................................................................... 53 Day 1 Presentation ............................................................................................................................... 53 Day 2 Presentation ............................................................................................................................... 71 Appendix C—Peer Exchange Evaluation ............................................................................................. 84 Peer Exchange Participant Survey ..................................................................................................... 84 Q1: How do you rate your satisfaction with the following: overall satisfaction with peer exchange, presentations, web conference platform, opportunities to contribute, and breakout discussions? ...................................................................................................................... 84 Q2: Were you able to provide all your comments? ..................................................................... 86 Q3: Are you planning to attend the TRB workshop “The Future of Utility Accommodation, Investigation, and As-Builts within Highways and Freeways” on Thursday, January 13, 2022? ................................................................................................................................................... 87 Q4: Do you have any suggestions for the TRB workshop? ........................................................ 87 Q5: If you would like to share any additional comments about the peer exchange, please enter them below. ............................................................................................................................. 87 Appendix D—TRB Workshop Overview and Agenda ...................................................................... 88 The Future of Utility Accommodation, Investigation, and As-Builts within Highways and Freeways ............................................................................................................................................ 88 Agenda .............................................................................................................................................. 88 Appendix E—TRB Workshop Participant Handout ........................................................................... 90 Merging and Updating AASHTO Policy on the Accommodation of Utilities within Freeway Right- of-Way and AASHTO A Guide for Accommodating Utilities within Highway Right-of-Way ........... 90 Appendix F—TRB Workshop Presentation ......................................................................................... 91

vii LIST OF FIGURES Figure 1. Participant Overall Satisfaction with Peer Exchange. ........................................................ 84 Figure 2. Participant Satisfaction with Presentations. ........................................................................ 85 Figure 3. Participant Satisfaction with Web Conference Platform. ................................................... 85 Figure 4. Participant Satisfaction with Opportunities to Contribute. ............................................... 86 Figure 5. Participant Satisfaction with Breakout Discussions. .......................................................... 86