South Carolina Strategic Corridors Plan
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SOUTH CAROLINA STRATEGIC CORRIDORS PLAN Prepared for: Prepared by: August 2014 TABLE OF CONTENTS 1. Introduction .......................................................................................................................................... 1 2. Vision, Goals, Objectives & Performance Measures ............................................................................ 2 2.1 Vision ......................................................................................................................................... 2 2.2 Goals ......................................................................................................................................... 2 2.3 Objectives and Performance Measures .................................................................................... 5 3. Strategic Corridor Network Update Process ........................................................................................ 6 3.1 Methodology ............................................................................................................................. 6 3.2 Technical Analysis ..................................................................................................................... 6 3.2.1 Step 1: Assessing the Roadways ................................................................................. 7 3.2.2 Step 2: Develop Tiered Corridors ............................................................................... 10 3.3 System Refinements and Stakeholder Input .......................................................................... 11 4. Multimodal Needs Identified by MPOs and COGs .............................................................................. 13 4.1 Methodology ........................................................................................................................... 13 4.2 MPO/COG Needs .................................................................................................................... 13 4.3.1 Methodology .............................................................................................................. 41 4.3.2 Data and Calculations ................................................................................................ 42 4.3.3 Results ........................................................................................................................ 43 4.4 Existing and Future Strategic Corridor Level of Service (LOS) ................................................ 49 4.5 Congestion Management Strategies ....................................................................................... 53 4.5.1 Roadway Operational Improvements ........................................................................ 54 4.5.2 Alternative Mode Support Strategies ........................................................................ 57 4.5.3 Demand Management Strategies .............................................................................. 58 5. Conclusions ......................................................................................................................................... 60 5.1 Implementation ...................................................................................................................... 60 APPENDIX A: Environmental Screening ................................................................................................... 62 APPENDIX B: Detailed Results of Congestion Analysis on Strategic Corridors ........................................ 69 i SOUTH CAROLINA MULTIMODAL TRANSPORTATION PLAN South Carolina Strategic Corridors Plan Table of Contents LIST OF TABLES Table 2‐1: 2040 Multimodal Transportation Plan Goals Compared to MAP‐21 National Goals ................ 4 Table 2‐2: Objectives for Mobility and System Reliability Goal ................................................................. 5 Table 2‐3: Objectives for Safety Goal ......................................................................................................... 5 Table 2‐4: Objectives for Infrastructure Condition Goal ............................................................................ 5 Table 2‐5: Objectives for Economic and Community Vitality Goal ............................................................ 5 Table 3‐1: Criteria for Assessing South Carolina Roadway Network .......................................................... 8 Table 3‐2: Summary of Strategic Corridor Network ................................................................................. 11 Table 4‐1: Needs Identification: Berkeley‐Dorchester‐Charleston Council of Governments .................. 15 Table 4‐2: Needs Identification: Catawba Council of Governments ........................................................ 17 Table 4‐3: Needs Identification: Central Midlands Council of Governments ........................................... 21 Table 4‐4: Needs Identification: Lower Savannah Council of Governments ............................................ 24 Table 4‐5: Needs Identification: Pee Dee Council of Governments ......................................................... 28 Table 4‐6: Needs Identification: South Carolina Appalachian Council of Governments .......................... 30 Table 4‐7: Needs Identification: Upper Savannah Council of Governments ............................................ 32 Table 4‐8: Needs Identification: Waccamaw Council of Governments .................................................... 35 Table 4‐9: MPO and COG Transportation Needs Costs ............................................................................ 41 Table 4‐10: Top 20 Congested Strategic Corridor Segments .................................................................... 43 Table 4‐11: Strategic Corridor Lane Miles with LOS Information ............................................................. 49 ii SOUTH CAROLINA MULTIMODAL TRANSPORTATION PLAN South Carolina Strategic Corridors Plan Table of Contents LIST OF FIGURES Figure 3‐1: Methodology to develop Statewide Strategic Corridors ......................................................... 6 Figure 3‐2: South Carolina Statewide Strategic Corridor Network .......................................................... 12 Figure 4‐1: Statewide Multimodal Needs on the Strategic Highway Network ........................................ 14 Figure 4‐2: Multimodal Needs for Berkeley‐Dorchester‐Charleston COG ............................................... 16 Figure 4‐3: Multimodal Needs for Catawba COG ..................................................................................... 20 Figure 4‐4: Multimodal Needs for Central Midlands COG ....................................................................... 23 Figure 4‐5: Multimodal Needs for Lower Savannah COG ......................................................................... 27 Figure 4‐6: Multimodal Needs for Pee Dee COG ...................................................................................... 29 Figure 4‐7: Multimodal Needs for South Carolina Appalachian COG ....................................................... 31 Figure 4‐8: Multimodal Needs for Upper Savannah COG ........................................................................ 34 Figure 4‐9: Multimodal Needs for Waccamaw COG ................................................................................ 40 Figure 4‐10: Top 100 Congested Strategic Corridor Segment Locations .................................................. 44 Figure 4‐11: Top 100 Congested Strategic Corridor Segments – Charleston Area................................... 45 Figure 4‐12: Top 100 Congested Strategic Corridor Segments – Columbia Area ..................................... 46 Figure 4‐13: Top 100 Congested Strategic Corridor Segments – Greenville/Spartanburg Area .............. 47 Figure 4‐14: Top 100 Congested Strategic Corridor Segments – Myrtle Beach Area .............................. 48 Figure 4‐15: Existing 2010 Conditions – Strategic Corridors .................................................................... 50 Figure 4‐16: Future 2040 Conditions – Strategic Corridors ...................................................................... 51 Figure 4‐17: Current Congestion, 2040 V/C and Identified Projects – Strategic Corridors ...................... 52 Figure 4‐18: Causes of Congestion in the United States .......................................................................... 53 iii SOUTH CAROLINA MULTIMODAL TRANSPORTATION PLAN 1. INTRODUCTION As a part of the 2040 South Carolina Multimodal Transportation Plan (2040 MTP), the existing Statewide Strategic Corridor Network Plan was updated. This updated plan focuses on maximizing South Carolina’s limited funding resources, maintaining the State’s position in the global marketplace and efficiently moving both people and goods. The purpose of the Statewide Strategic Corridor Network is to provide a connected, continuous network that serves the traveling public and movement of freight. The benefit for having the Statewide Strategic Corridor Network is to develop a focused strategic system which will provide the needed connectivity to allow South Carolina to maintain and enhance its economic vitality. The first step in the Statewide Strategic Corridor Network plan was to update the goals, objectives, and performance measures based on the work completed in the 2040 MTP. The identification of what the system is designed to accomplish is critical in the further development of implementation processes,