I-15 Comprehensive Corridor Study Final Report Southern California Association of Governments (SCAG) San Bernardino Associated Governments (SANBAG) California Department of Transportation (Caltrans) District 8 Prepared by: In Association with: Cambridge Systematics, Inc. December 20, 2005 The Tioga Group Associated Engineers, Inc. Arellano Associates Kimley-Horn and Associates Economics & Politics, Inc. Counts Unlimited I-15 Comprehensive Corridor Study Final Report Prepared for: SOUTHERN CALIFORNIA ASSOCIATION OF GOVERNMENTS (SCAG) SAN BERNARDINO ASSOCIATED GOVERNMENTS (SANBAG) CALIFORNIA DEPARTMENT OF TRANSPORTATION (CALTRANS), DISTRICT 8 Prepared by: PARSONS BRINCKERHOFF QUADE & DOUGLAS, INC. In Association with: Cambridge Systematics Tioga Group Associated Engineers Arellano Associates Kimley-Horn and Associates Economics & Politics, Inc. Counts Unlimited December 20, 2005 TABLE OF CONTENTS Section 1 Executive Summary ............................................................................................ 1 1.1 I-15 Corridor Study Area..................................................................................................... 2 1.2 Purpose and Need Statement.......................................................................................... 4 1.2.1 Improvement Purpose............................................................................................ 4 1.2.2 Improvement Need................................................................................................ 4 1.2.3 Improvement Objectives....................................................................................... 4 1.3 Identification of Initial Alternatives................................................................................... 5 1.4 Screening of Initial Alternatives......................................................................................... 6 1.5 Alternatives Selected for Detailed Evaluation ............................................................... 8 1.6 Detailed Evaluation ............................................................................................................ 8 1.7 Public Outreach Program................................................................................................ 12 1.8 Locally Preferred Strategy ............................................................................................... 13 1.8.1 Recommendation Part 1: Implementation of Strategy B TDM/TSM Elements ................................................................................................................. 14 1.8.2 Recommendation Part 2: Reconfiguration of I-15/I-215 Interchange......... 14 1.8.3 Recommendation Part 3: Advance Two Future Build Strategies ................. 15 1.9 Financial Plan for the LPS ................................................................................................. 16 1.10 Implementation Plan for the LPS .................................................................................... 18 1.10.1 Near-Term Improvements Action Plan: I-15/I-215 Interchange .................... 18 1.10.2 Long-Term Improvements Action Plan: I-15 Corridor Projects....................... 19 Section 2 Introduction........................................................................................................ 20 2.1 I-15 Corridor Study Area................................................................................................... 20 2.2 Background........................................................................................................................ 21 2.3 Purpose and Need Statement........................................................................................ 26 2.3.1 Improvement Purpose.......................................................................................... 26 2.3.2 Improvement Need.............................................................................................. 26 2.4 Study Objectives ...............................................................................................................26 2.4.1 Traffic Congestion................................................................................................. 27 2.4.2 Goods Movement ................................................................................................ 27 2.4.3 Transit....................................................................................................................... 27 2.4.4 Safety ...................................................................................................................... 28 2.4.5 Design Improvements .......................................................................................... 28 2.4.6 Cost-Effectiveness................................................................................................. 28 2.5 Existing Transportation Conditions.................................................................................. 29 2.6 Economic Background Analysis ..................................................................................... 31 2.7 Outline of Report ...............................................................................................................34 I-15 Comprehensive Corridor Study i Final Report Section 3 Alternatives Development ............................................................................... 35 3.1 I-15 Freeway Characteristics ........................................................................................... 36 3.1.1 Existing Characteristics......................................................................................... 36 3.1.2 Planned Improvements ....................................................................................... 38 3.2 Identification of Initial Alternatives................................................................................. 40 3.2.1 Alternative 1 – No-Build Alternative ................................................................... 41 3.2.2 Alternative 2 – TDM/TSM Alternative.................................................................. 44 3.2.3 Alternative 3 – HOV Lane (SR-60 to D Street) with Express Bus...................... 44 3.2.4 Alternative 4 – Cajon Pass Dedicated Truck Lanes (Glen Helen to US-395) .................................................................................................................... 46 3.2.5 Alternative 5 – Full Corridor Dedicated Truck Lanes (SR-60 to D Street)...................................................................................................................... 48 3.2.6 Alternative 6 – Single General-Purpose Lane (SR-60 to D Street) ................. 48 3.2.7 Alternative 7 – Multiple General-Purpose/Express Lanes (SR-60 to D Street)...................................................................................................................... 51 3.2.8 Alternative 8 – Reversible Managed Lanes (SR-210 to US-395)..................... 53 3.2.9 Alternative 9 – Commuter Rail Service (San Bernardino to Victorville) ....... 55 3.2.10 I-15/I-215 Interchange Improvement Alternatives .......................................... 55 3.3 Screening Methodology .................................................................................................. 56 3.3.1 Identification of Screening Evaluation Criteria................................................ 57 3.3.2 Screening Evaluation Matrix ............................................................................... 58 3.3.3 Description of Screening Evaluation Criteria ................................................... 59 3.4 Screening Evaluation........................................................................................................ 62 3.4.1 Criterion Category A: Future General-Purpose Capacity ............................. 62 3.4.2 Criterion Category B: Future HOV Capacity................................................... 65 3.4.3 Criterion Category C: Future Truck Capacity................................................. 65 3.4.4 Criterion Category D: Safety.............................................................................. 65 3.4.5 Criterion Category E: Environmental................................................................ 66 3.4.6 Criterion Category F: Cost.................................................................................. 66 3.5 Summary of Screening Evaluation Results .................................................................... 73 3.6 Alternatives Selected for Detailed Evaluation ............................................................. 73 Section 4 Detailed Evaluation of Selected Alternatives................................................. 76 4.1 Detailed Evaluation Methodology................................................................................. 77 4.1.1 Definition of the Seven Study Segments ........................................................... 78 4.1.2 Detailed Evaluation Measures of Effectiveness............................................... 80 4.1.3 Detailed Evaluation Tables and Charts ............................................................ 88 4.1.4 Detailed Evaluation Grading Matrix.................................................................. 94 4.2 Detailed Evaluation Travel Demand Forecasts............................................................ 97 4.2.1 SCAG Travel Analysis Model ............................................................................... 97 4.2.2 Modeling Specifics of the Five Strategies ........................................................