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IBC VISION PLAN 2018 TRAFFIC STUDY UPDATE – ALTERNATIVES ANALYSIS Final TABLE OF CONTENTS Introduction and Summary ...................................................................................................................................6 51 5 n/a 7 1.1 Introduction .................................................................................................................................................6 Alternative 1.................................................................................................................................................9 Alternative 2...............................................................................................................................................10 1.2 1.3 1.4 1.5 Traffic Impacts & Fair Share.......................................................................................................................10 7 n/aEstimated Costs of Alternatives .................................................................................................................12 83Alternative 2 - Red Hill Avenue Widening (Main Street to MacArthur Boulevard).............................................55 8 8 3.1 Introduction ...............................................................................................................................................55 Alternative 2 Daily Arterial Segment Analysis............................................................................................55 Alternative 2 Peak Hour Link Analysis........................................................................................................65 Alternative 2 Peak Hour Intersection Analysis...........................................................................................65 Alternative 2 Peak Hour Freeway Mainline Analysis .................................................................................74 Alternative 2 Peak Hour Freeway Ramp Analysis ......................................................................................76 Alternative 2 Future Improvements and Mitigations ................................................................................82 3.2 3.3 3.4 3.5 3.6 3.7 18 18 27 29 35 40 40 42 43 47 48 n/a 113 115 117 119 n/a 122 4 Cost Estimates.....................................................................................................................................................87 4.1 Cost Estimates for Mitigation Improvements............................................................................................87 References...........................................................................................................................................................91 Glossary of Transportation Terms.......................................................................................................................92 Appendices..........................................................................................................................................................96 Appendix A: ICU Worksheets ..................................................................................................................................96 Appendix B: HCS Mainline Analysis.........................................................................................................................97 Appendix C: HCS Ramp Analysis..............................................................................................................................98 Appendix D: Fair Share Analysis ..............................................................................................................................99 Appendix E: ICU Worksheet for Mitigation Intersection.......................................................................................100 Appendix F: Intersection Improvement List..........................................................................................................101 Appendix G: Alternative 1 Improvement Concept Plans and Cost Estimates .......................................................102 Appendix H: Alternative 2 Improvement Concept Plans and Cost Estimates .......................................................103 5 6 7 Iteris, Inc. | ii City Council 21 – 4 4/16/2024