Best Practices for Roadway Tunnel Design, Construction, Maintenance, Inspection, and Operations

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Best Practices for Roadway Tunnel Design, Construction, Maintenance, Inspection, and Operations NCHRP Project 20-68A Scan 09-05 Best Practices For Roadway Tunnel Design, Construction, Maintenance, Inspection, And Operations Supported by the National Cooperative Highway Research Program April 2011 The information contained in this report was prepared as part of NCHRP Project 20 68A U.S. Domestic Scan, National Cooperative Highway Research Program. SPECIAL NOTE: This report IS NOT an official publication of the National Cooperative Highway Research Program, Transportation Research Board, National Research Council, or The National Academies. Acknowledgments The work described in this document was conducted as part of NCHRP Project 20-68A, the U.S. Domestic Scan program. This program was requested by the American Association of State Highway and Transportation Officials (AASHTO), with funding provided through the National Cooperative Highway Research Program (NCHRP). The NCHRP is supported by annual voluntary contributions from the state departments of transportation. Additional support for selected scans is provided by the U.S. Federal Highway Administration and other agencies. The purpose of each scan and of Project 20-68A as a whole is to accelerate beneficial innovation by facilitating information sharing and technology exchange among the states and other transportation agencies, and identifying actionable items of common interest. Experience has shown that personal contact with new ideas and their application is a particularly valuable means for such sharing and exchange. A scan entails peer-to-peer discussions between practitioners who have implemented new practices and others who are able to disseminate knowledge of these new practices and their possible benefits to a broad audience of other users. Each scan addresses a single technical topic selected by AASHTO and the NCHRP 20-68A Project Panel. Further information on the NCHRP 20-68A U.S. Domestic Scan program is available at http://144.171.11.40/cmsfeed/TRBNetProjectDisplay.asp?ProjectID=1570. This report was prepared by the scan team for Scan 09 05, Best Practices for Roadway Tunnel Design, Construction, Maintenance, Inspection, and Operations, whose members are listed below. Scan planning and logistics are managed by Arora and Associates, P.C.; Harry Capers is the Principal Investigator. NCHRP Project 20 68A is guided by a technical project panel and managed by Andrew C. Lemer, Ph.D., NCHRP Senior Program Officer. Kevin Thompson, P.E., Caltrans, AASHTO Co-Chair Jesus Rohena, P.E., FHWA, FHWA Co-Chair Alexander K. Bardow, P.E., Massachusetts DOT Barry B. Brecto, P.E., FHWA Washington State Division Bijan Khaleghi, Ph.D., P.E., S.E., Washington State DOT Louis Ruzzi, P.E., Pennsylvania DOT Michael G. Salamon, Colorado DOT Fulvio Tonon, Ph.D., P.E., Liaison, TRB Tunnels and Underground Structures Committee Mary Lou Ralls, P.E., Report Facilitator BEST PRACTICES FOR ROADWAY TUNNEL DESIGN, CONSTRUCTION, MAINTENANCE, INSPECTION, AND OPERATIONS Disclaimer The information in this document was taken directly from the submission of the authors. The opinions and conclusions expressed or implied are those of the scan team and are not necessarily those of the Transportation Research Board, the National Research Council, or the program sponsors. This document has not been edited by the Transportation Research Board. Scan 09-05 Best Practices For Roadway Tunnel Design, Construction, Maintenance, Inspection, And Operations REQUESTED BY THE American Association of State Highway and Transportation Officials PREPARED BY Kevin Thompson, P.E., Louis Ruzzi, P.E., Caltrans, AASHTO Co Chair Pennsylvania DOT Jesus Rohena, P.E., Michael G. Salamon, FHWA, FHWA Co Chair Colorado DOT Alexander K. Bardow, P.E., Fulvio Tonon, Ph.D., P.E., Massachusetts DOT Liaison, TRB Tunnels and Underground Structures Committee Barry B. Brecto, P.E., FHWA Washington State Division Mary Lou Ralls, P.E., Report Facilitator Bijan Khaleghi, Ph.D., P.E., S.E., Washington State DOT SCAN MANAGEMENT Arora and Associates, P.C. Lawrenceville, NJ April 2011 The information contained in this report was prepared as part of NCHRP Project 20 68A U.S. Domestic Scan, National Cooperative Highway Research Program. SPECIAL NOTE: This report IS NOT an official publication of the National Cooperative Highway Research Program, Transportation Research Board, National Research Council, or The National Academies. BEST PRACTICES FOR ROADWAY TUNNEL DESIGN, CONSTRUCTION, MAINTENANCE, INSPECTION, AND OPERATIONS 6 Table of Contents Abbreviations and Acronyms.......................................................................................... VII Executive Summary.............................................................................................................. ES-1 Introduction............................................................................................................................... .ES-1 Scan Purpose and Scope .......................................................................................................... ES-1 Summary of Findings and Recommendations ........................................................................ ES-2 1) Develop standards, guidance, and best practices for roadway tunnels........................... ES-2 2) Develop an emergency response system plan unique to each facility which takes into account human behavior, facility ventilation, and fire mitigation................. ES-3 3) Develop and share inspection practices among tunnel owners........................................ ES-4 4) Consider inspection and maintenance operations during the design stage.....................ES-5 5) Develop site-specific plans for the safe and efficient operation of roadway tunnels........ES-5 6) A tunnel includes a long-term commitment to provide funding for preventive maintenance, upgrading of systems, and training and retention of operators................ES-6 7) Share existing technical knowledge within the industry to design a tunnel.................. ES-7 8) Provide education and training in tunnel design and construction................................. ES-7 Planned Implementation Actions............................................................................................. ES-7 1.0 Introduction....................................................................................................................... 1-1 Background..............................................................................................................................1-2 Methodology.............................................................................................................................1-2 Scan Itinerary..........................................................................................................................1-2 Host Agencies.......................................................................................................................... 1-2 Alaska Department of Transportation and Public Facilities (AKDOT&PF).................. 1-3 California Department of Transportation (Caltrans)....................................................... 1-3 Colorado Department of Transportation (CDOT)............................................................. 1-4 District of Columbia Department of Transportation (DDOT).......................................... 1-5 Massachusetts Department of Transportation (MassDOT)............................................. 1-6 Pennsylvania Department of Transportation (PennDOT)............................................... 1-6 Port Authority of New York and New Jersey (PANY&NJ).............................................. 1-7 Virginia’s Chesapeake Bay Bridge and Tunnel District (CBBT District)....................... 1-7 Virginia Department of Transportation (VDOT).............................................................. 1-8 Washington State Department of Transportation (WSDOT)........................................... 1-9 City of Seattle (Seattle DOT and Seattle Fire Department)............................................1-10 Sound Transit..................................................................................................................... 1-10 Scan Team .......................................................................................................................... 1-11 BEST PRACTICES FOR ROADWAY TUNNEL DESIGN, CONSTRUCTION, MAINTENANCE, INSPECTION, AND OPERATIONS I TABLE OF CONTENTS 2.0 Findings and Observations....................................................................................... 2-1 2.1 US Tunnel Inventory......................................................................................................... 2-1 2.1.1 Number of Tunnels in Inventory................................................................................ 2-2 2.1.2 Ages of Tunnels ......................................................................................................... 2-2 2.1.3 Tunnel Definition ...................................................................................................... 2-3 2.1.3.1 Current Definitions Used by Owners.............................................................. 2-3 2.1.3.2 Proposed Changes to AASHTO Tunnel Definition......................................... 2-4 2.1.4 Differentiation between Wide Bridges over Highways and Short Tunnels............. 2-6 2.1.5 Inventory Numbering System.................................................................................... 2-6 2.1.6 Inventory of Geometric Characteristics Relative to NBIS.......................................
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