Sepulveda Pass Corridor Systems Planning Study Final Compendium Report. Connecting the San Fernando Valley and the Westside

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1 Los Angeles County Metropolitan Transportation Authority November 2012 Connecting the San Fernando Valley and the Westside Interstate 405 Sepulveda Pass

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3 Sepulveda Pass Corridor Systems Planning Study Prepared for: The Los Angeles County Metropolitan Transportation Authority Prepared by: Parsons Brinckerhoff In collaboration with: AECOM Technical Services, Inc. HNTB Corporation November 2012

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5 Preface In January 2012, the Los Angeles County Metropolitan Transportation Authority (Metro) initiated the to evaluate the potential for providing long-term transit and/or highway capacity solutions through the Sepulveda Pass along Interstate 405. This study is the initial phase of project development and precedes an Alternatives Analysis study or Environmental Impact Study (EIS) and/or Environmental Impact Report (EIR). The Systems Planning Study defines broad concepts from transit modes such as Bus Rapid Transit (BRT), Light Rail Transit (LRT), and Heavy Rail Transit (HRT) to highway improvements including High Occupancy Toll (HOT) lanes, and at-grade, above and/or below grade-separated alignments. The concepts were then evaluated against several performance criteria, including engineering feasibility, travel demand, rough order of magnitude (ROM) costs in current dollars (2012), and environmental issues. This compendium report includes an Executive Summary along with technical reports and white papers prepared by the transportation planning, demand modeling, civil engineering, and environmental planning discipline teams. Study findings and conclusions can be found beginning on page ES-12 of the Executive Summary. Note that the technical reports and white papers in the compendium report are working documents that were developed at various stages of the study. As a result, concepts referenced in these documents do vary from the final concepts. The Executive Summary provides the most recent and up to-date maps and exhibits depicting the final planning concepts evaluated. This compendium is organized in the following sections: 1.0 Executive Summary The Executive Summary presents a high-level overview of the Sepulveda Pass Corridor Systems Planning Study. It describes existing conditions along the corridor and the methodology used to develop a total of six representative concepts. Each concept was then evaluated against several performance criteria, including costs, ridership and person throughput, and cost-effectiveness. The Executive Summary provides preliminary key findings for each concept based on analysis performed by the four discipline teams involved in the study Transportation Planning, Demand Modeling, Civil Engineering, and Environmental Planning. Next steps are also presented based on the information that emerged from this process., November 2012 i

6 2.0 Mobility Problem Definition White Paper The Mobility Problem Definition Whitepaper documents and assesses existing conditions along the Sepulveda Pass Corridor Study Area and identifies the mobility problem within the Corridor. This document provides a foundation for evaluation of the systems planning concepts in subsequent reports. Specifically, this whitepaper describes the study corridor boundaries, demographic context, travel markets and characteristics, land use patterns, existing and planned infrastructure, as well as quantifies the transportation performance and deficiencies in the corridor. 3.0 Potential Ridership/Usage of Alternative Concepts Report The evaluates multimodal options and considers both highway and transit improvements. The Potential Ridership/Usage of Alternative Concepts Report (Travel Demand Modeling Report) documents the final travel demand projections for the different systems planning concepts being considered for the Sepulveda Pass. It also evaluates and compares these different concepts through a range of performance indicators, including transit ridership, person throughput, and travel time savings. 4.0 Engineering Issues Report This report presents refined corridor system concepts, rough-order-of magnitude (ROM) cost estimates, information on key design elements, geotechnical assessments, constructability issues, and issues uncovered during the course of this study that need further investigation and analysis. 5.0 Preliminary Cost Report This report presents the preliminary cost estimates for the engineering concepts developed and refined as part of the. It provides ROM cost estimates for capital, operating and maintenance cost for each systems planning concept. The cost methodology described in the report is reflective of the conceptual nature of the study and is intended to provide a high level comparison of alternatives., November 2012 ii

7 Appendix The appendix includes the following reports: Environmental Issues Technical Paper Geotechnical Evaluation Memorandum Summary Notes for Charrettes #1 and #2 June 20, 2012 Staff Report, November 2012 iii

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9 TABLE OF CONTENTS Title Page and Preface Section/Page Executive Summary , ES 1-36 Study Findings and Conclusions... ES-12 Next Steps... ES-35 Mobility Problem Definition Introduction Background Approach Proposed Study Corridor Boundaries Demographic Context Travel Markets & Characteristics Topography, Land Use & Activity Centers Existing Transportation Facilities Planned Transportation Facilities Freeway Mainline Performance HOV Performance Transit System Performance Air Quality/Non-Conformity Key Findings and Conclusions Potential Ridership/Usage of Alternative Concepts Report Introduction Concepts Under Evaluation Travel Demand Methodology Travel Demand Results Key Performance Indicators Conclusions Next Steps Appendix Engineering Issues Report Introduction Corridor System Concepts Next Steps Appendix 1: Conceptual Drawings Appendix 2: Higher Speed Buses, November 2012

10 Preliminary Cost Report Introduction Sources of Cost Data Rough Order of Magnitude (ROM) Cost Estimates Rough Order of Magnitude Capital Cost Summary Appendix 1 Draft Guideway Technology Alternatives for Charrette One Sepulveda Pass Systems Planning Corridor Study Appendix 2 Concept #5 Aerial Viaduct Preliminary Cost Appendix 3 Initial Operating Segment Appendix A - Environmental Issues Technical Paper 1. Introduction... A-1 2. Background Information... A-1 3. Systems Concepts and Physical Improvements... A-1 4. Environmental Challenges... A Next Steps... A-37 Appendix B - Geotechnical Evaluation Memorandum 1. Introduction... B-1 2. Data Collection and Literature Review... B Regional Geology... B Faulting and Seismicity... B Geologic and Seismic Hazards... B Geotechnical Evaluations... B Discussions and Conclusions... B Limitations... B References... B-46 Appendix C - Summary Notes for Charrettes #1 and #2 Appendix D - June 20, 2012 Staff Report List of Preparers, November 2012