Risk Management Strategy for Bridges and Structures FINAL REPORT November 2009 By: Michael Baker Jr., Inc. COMMONWEALTH OF PENNSYLVANIA DEPARTMENT OF TRANSPORTATION CONTRACT # 355I01 PROJECT # 07 Technical Report Documentation Page 1. Report No. 2. Government Accession No. 3. Recipient’s Catalog No. FHWA-PA-2009-018-070802 4. Title and Subtitle 5. Report Date November 13, 2009 Risk Management Strategy for Bridges and Structures 6. Performing Organization Code 7. Author(s) 8. Performing Organization Report No. Bryan Spangler, P.E. Paul D. Thompson 9. Performing Organization Name and Address 10. Work Unit No. (TRAIS) Michael Baker Jr., Inc. 4431 N. Front Street, 2nd Floor 11. Contract or Grant No. Harrisburg, PA 17110-1709 355I01 12. Sponsoring Agency Name and Address 13. Type of Report and Period Covered The Pennsylvania Department of Transportation Final Report – October 2008 – August 2009 Bureau of Planning and Research Commonwealth Keystone Building 400 North Street, 6th Floor 14. Sponsoring Agency Code Harrisburg, PA 17120-0064 15. Supplementary Notes 16. Abstract This report is a study of PennDOT’s Risk Assessment program and a search for ways to improve the system. Research was done via literature search of relevant documents and surveys of PennDOT District personnel and selected other states with histories of asset management policies. Input was also received from the Bridge Quality Assurance Division who manages the system. The result is a list of quick strike, median range and long range recommendation for the system. In addition, a study was performed and a software tool provided to evaluate changes to the weights applied to the factors used to calculate the risk scores. 17. Key Words 18. Distribution Statement No restrictions. This document is available Risk, Asset Management, Bridge Management, Structures, Bridges from the National Technical Information Service, Springfield, VA 22161 19. Security Classif. (of this report) 20. Security Classif. (of this page) 21. No. of Pages 22. Price Unclassified Unclassified 160 Form DOT F 1700.7 (8-72) Reproduction of completed page authorized Table of Contents Task 1, Synthesis Report Executive Summary ............................................................................................................................................... 1 1.0 Introduction .................................................................................................................................................... 2 1.1 Objectives and Scope ............................................................................................................................... 2 2.0 Literature Review ............................................................................................................................................ 3 2.1 Summary .................................................................................................................................................. 3 2.2 Documentation Process ........................................................................................................................... 3 2.3 Databases Searched ................................................................................................................................. 3 2.4 Transportation Agencies .......................................................................................................................... 7 2.5 AASHTO ................................................................................................................................................. 10 2.6 NCHRP Reports ...................................................................................................................................... 10 2.7 Technical Journals/Publications ............................................................................................................. 11 2.8 National Infrastructure Protection Plan ................................................................................................. 16 2.9 U.S. Coast Guard .................................................................................................................................... 17 2.10 Conference Proceedings ......................................................................................................................... 17 2.11 ASCE ....................................................................................................................................................... 19 2.12 International Research ........................................................................................................................... 20 2.13 Text Books ............................................................................................................................................. 21 2.14 Expert Research ..................................................................................................................................... 22 3.0 Acknowledgements ...................................................................................................................................... 26 4.0 Sources ......................................................................................................................................................... 26 Task 2, Research Survey Report Executive Summary ............................................................................................................................................. 27 1.0 Introduction .................................................................................................................................................. 28 1.1 Objectives and Scope ............................................................................................................................. 28 2.0 PennDoT District Survey ................................................................................................................................ 28 2.1 District Contacts ..................................................................................................................................... 29 2.2 District Surveys ...................................................................................................................................... 30 2.3 District Survey Responses ...................................................................................................................... 30 2.4 District Response Summary.................................................................................................................... 30 3.0 National Survey ............................................................................................................................................ 33 3.1 State Contacts ........................................................................................................................................ 33 3.2 State Survey Questionnaire .................................................................................................................... 34 3.3 State Survey Responses ......................................................................................................................... 34 3.4 State Response Summary ....................................................................................................................... 34 Table of Contents Task 3, Recommendations for Risk Management Strategy Executive Summary ............................................................................................................................................. 46 1.0 Introduction .................................................................................................................................................. 47 2.0 Overview of Current System .......................................................................................................................... 47 3.0 Recommendations ........................................................................................................................................ 50 3.1 Process ................................................................................................................................................... 50 3.1.1 Proposed Risk Factors .................................................................................................................... 50 3.1.1.1 Utilities Supported by Structures ....................................................................................... 50 3.1.1.2 Proposed Data Collection for Problematic Details ............................................................. 50 3.1.1.3 Seismic Considerations ...................................................................................................... 51 3.1.1.4 Service-Sensitive Facilities ................................................................................................. 51 3.1.2 Proposed Adjustments to Weights of Risk Factors ......................................................................... 51 3.1.2.1 Aggregate Risk ................................................................................................................... 52 3.1.2.2 Structurally Deficient Risk .................................................................................................. 52 3.1.3 Proposed Adjustments to Risk Conditions ..................................................................................... 52 3.1.3.1 Structurally Deficient Appraisal Risk .................................................................................