Columbia River Crossing Project Bridge Review Panel Final Report February 3, 2011 Chair/Contact: Thomas R. Warne, PE • Tom Warne & Associates 9874 S Spruce Grove Way • South Jordan, UT 84095 [email protected] • 801.302.8300 Table of Contents Executive Summary .......................................................................................... 11 Recommendations .......................................................................................................................................................... 13 Secondary Recommendations / Opportunities for Improvement ............................................................................ 14 Introduction ........................................................................................................ 15 Background ........................................................................................................................................................................ 15 Bridge Review Panel (BRP) ........................................................................................................................................... 15 Purpose .......................................................................................................................................................................................... 16 Objectives ...................................................................................................................................................................................... 17 Approach ............................................................................................................. 19 Understand Current Proposed Alternative (Open-Web Box Girder) ......................................................... 20 Identify Challenges Associated with the Open-Web Box Girder ................................................................... 20 Operational Reliability .............................................................................................................................................................. 21 Structural Complexity ............................................................................................................................................................... 21 Maintainability ............................................................................................................................................................................. 22 Aesthetics ...................................................................................................................................................................................... 22 Cost Uncertainty ......................................................................................................................................................................... 22 Review Project Constraints ......................................................................................................................................... 23 Identify Bridge Type Alternatives ............................................................................................................................... 24 Conduct Bridge Type Assessment ............................................................................................................................. 25 Develop Bridge Type Recommendations ................................................................................................................ 27 Explore Additional Considerations ............................................................................................................................ 29 Review of Open-Web Box Girder Design ...................................................... 31 Cable-Stayed Alternative ................................................................................. 33 General Description .................................................................................................................................................................. 33 Superstructure Layout .............................................................................................................................................................. 34 Tower Layout ............................................................................................................................................................................... 35 Erection .......................................................................................................................................................................................... 37 Aesthetics ...................................................................................................................................................................................... 38 Tied Arch Alternative ....................................................................................... 47 3 CRC Bridge Expert Review Panel Final Report General Description .................................................................................................................................................................. 47 Superstructure Layout .............................................................................................................................................................. 49 Foundations .................................................................................................................................................................................. 51 Erection .......................................................................................................................................................................................... 52 Aesthetics ...................................................................................................................................................................................... 53 Composite Deck Truss ..................................................................................... 59 General Description ....................................................................................................................................................... 59 Superstructure Layout .............................................................................................................................................................. 60 Pier Layout and Articulation ................................................................................................................................................... 63 Foundation .................................................................................................................................................................................... 64 Erection .......................................................................................................................................................................................... 65 Aesthetics ...................................................................................................................................................................................... 66 Cost Estimates ................................................................................................... 75 Additional Considerations Impacting Bridge Type Recommendations ... 79 Aviation ............................................................................................................................................................................... 79 Navigation .......................................................................................................................................................................... 82 In-Water Impacts ............................................................................................................................................................. 83 Risk ....................................................................................................................................................................................... 85 Additional Findings and Recommendations .................................................. 89 Alignment Considerations for the Columbia River Crossing ........................................................................... 89 Upstream Alignment ................................................................................................................................................................ 90 Upstream & Downstream Tangent Alignment .............................................................................................................. 92 Straight Alignments and the Influence of the North Portland Harbor Bridge ..................................................... 95 Substandard Interchange Spacing and Project Impacts ........................................................................................ 96 North Portland Harbor Bridge Replacement ......................................................................................................... 97 Structural Design Criteria Review ............................................................................................................................. 98 Conclusions and Recommendations ............................................................... 99 Recommendations ....................................................................................................................................................... 103 Secondary Recommendations / Opportunities for Improvement