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I‐5 South Multimodal Corridor Study Appendix H I‐5 South Multimodal Corridor Study Shared Light Rail Transit/Freight Rail Improvements Project Initiation Document (October 29, 2010) Project Initiation Document I‐5 South Multimodal Corridor Shared Light Rail Transit/Freight Rail Improvements Prepared By: San Diego Association of Governments www.sandag.org October 29, 2010 I‐5 South Multimodal Corridor PROJECT INITIATION DOCUMENT Shared Light Rail Transit/Freight Rail Improvements Table of Contents Executive Summary ....................................................................................................................................... 1 Introduction .................................................................................................................................................. 4 Project Background ....................................................................................................................................... 5 Need and Purpose ......................................................................................................................................... 9 Planned Improvements ............................................................................................................................... 10 Deficiencies ................................................................................................................................................. 10 Corridor and System Coordination ............................................................................................................. 12 Design Criteria ............................................................................................................................................. 13 Alternatives ................................................................................................................................................. 14 Alignment 4a ........................................................................................................................................... 15 Alignment 4b ........................................................................................................................................... 17 Alignment 4c ........................................................................................................................................... 20 Evaluation of Alignments ............................................................................................................................ 23 Recommendation ........................................................................................................................................ 25 Grade Separations Only .............................................................................................................................. 25 Palomar Street Grade Separation ............................................................................................................... 27 Palomar Street Alternatives .................................................................................................................... 28 Palomar Street Over Rail (Road Overcrossing) ................................................................................... 28 Rail Under Palomar Street (Rail Undercrossing) ................................................................................. 28 Rail Over Palomar Street (Rail Overcrossing) ...................................................................................... 28 Alternatives Considered and Rejected .................................................................................................... 29 Grade‐Separated Freight at Palomar Street ....................................................................................... 29 Palomar Street Under Rail .................................................................................................................. 29 Potential Utility Conflicts ........................................................................................................................ 30 Area of Potential Effect for Alternatives ................................................................................................. 30 Possible Traffic Control and/or Staging Requirements ........................................................................... 31 Palomar Street Over Rail Alternative .................................................................................................. 31 Rail Under Palomar Street Alternative ................................................................................................ 32 Rail Over Palomar Street Alternative .................................................................................................. 32 Potential Effects of Construction Activities ............................................................................................ 32 i I‐5 South Multimodal Corridor PROJECT INITIATION DOCUMENT Shared Light Rail Transit/Freight Rail Improvements Community Involvement ............................................................................................................................ 33 Environmental Determination/Documentation ......................................................................................... 33 Funding ....................................................................................................................................................... 33 Schedule ...................................................................................................................................................... 34 Regulatory Coordination ............................................................................................................................. 34 SANDAG Project Personnel ......................................................................................................................... 34 Project Reviews ........................................................................................................................................... 35 PID Preparation ........................................................................................................................................... 35 Figure 1: Regional Vicinity Map .................................................................................................................... 6 Figure 2: Project Area ................................................................................................................................... 7 Figure 3: Alignment 4a Typical Section (E & Palomar Streets) ................................................................... 16 Figure 4: Alignment 4a Typical Section (H Street) ...................................................................................... 17 Figure 5: Alignment 4b Typical Section (E & Palomar Streets) ................................................................... 19 Figure 6: Alignment 4b Typical Section (H Street) ...................................................................................... 20 Figure 7: Alignment 4c Typical Section (E & H Streets) ............................................................................... 22 Figure 8: Alignment 4c Typical Section (Palomar Street) ............................................................................ 23 Figure 9: Evaluation Criteria Summary Matrix ............................................................................................ 25 Attachments Attachment A Alignment 4a Conceptual Layout Alignment 4a Cost Estimate Attachment B Alignment 4b Conceptual Layout Alignment 4b Cost Estimate Attachment C Alignment 4c Conceptual Layout Alignment 4c Cost Estimate Attachment D Third Track Alignments – Conceptual Layout Schematic Drawing Attachment E Alignments 4a, 4b, and 4c Evaluation Matrix Attachment F Palomar Street Over Rail Conceptual Layout Palomar Street Over Rail Cost Estimate Attachment G Rail Under Palomar Street Conceptual Layout Rail Under Palomar Street Cost Estimate ii I‐5 South Multimodal Corridor PROJECT INITIATION DOCUMENT Shared Light Rail Transit/Freight Rail Improvements Attachment H Rail Over Palomar Street Conceptual Layout Rail Over Palomar Street Cost Estimate Attachment I SANDAG’s Regional Rail Grade Separations Prioritization List iii I‐5 South Multimodal Corridor PROJECT INITIATION DOCUMENT Shared Light Rail Transit/Freight Rail Improvements Executive Summary This Project Initiation Document (PID) recommends a preferred rail alignment for the installation and operation of a third mainline track for shared light rail transit (LRT)/freight rail along Interstate 5 (I‐5) between State Route 54 (SR 54) and Main Street in the City of Chula Vista within the County of San Diego. The existing rail alignment along this corridor is owned by the Metropolitan Transit System (MTS), which operates the Blue Line Trolley LRT service from San Ysidro to downtown San Diego and Old Town. Currently, the line is heavily used by LRT passengers, and usage is projected to increase in the future. The San Diego Association of Governments (SANDAG), in preliminary studies, has identified that Express Trolley operations could be a potential benefit to ridership in this corridor. In addition to passenger operations, freight operations also use this corridor to interchange cargo with Mexico and serve local industries along the alignment. This PID evaluates alignment alternatives for adding a third mainline track for Express Trolley operations, as well maintaining

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