Technical Assistance Consultant’s Report Project Number: 47030-001 November 2015 People's Republic of China: Jiangxi Pingxiang Integrated Rural-Urban Infrastructure Development— Final Report SD3: Engineering Technical Analysis of the Road Component (Financed by the ADB's Technical Assistance Special Fund and Cofinanced by the Multi-Donor Trust Fund under the Water Financing Partnership Facility) Prepared by AECOM Asia Company Ltd. Hong Kong, China For Pingxiang Municipal Government This consultant’s report does not necessarily reflect the views of ADB or the Government concerned, and ADB and the Government cannot be held liable for its contents. (For project preparatory technical assistance: All the views expressed herein may not be incorporated into the proposed project’s design. Jiangxi Pingxiang Integrated Rural-Urban Infrastructure Development Project TABLE OF CONTENTS 1. Introduction ........................................................................................................ 4 1.1 Background ................................................................................................. 4 1.2 Transport Plan ............................................................................................. 5 2. Proposed Road .................................................................................................. 9 2.1 Rationale ..................................................................................................... 9 2.2 Traffic Demand Analysis ............................................................................. 11 2.2.1 Introduction ............................................................................................. 11 2.2.2 Traffic Survey......................................................................................... 12 2.2.3 Traffic Zoning ......................................................................................... 14 2.2.4 Trip Generation ...................................................................................... 15 2.2.5 Traffic Assignment ................................................................................. 16 2.3 Natural Conditions ..................................................................................... 17 2.3.1 Regional Hydrology and Weather .......................................................... 17 2.3.2 Site Stability Assessment ....................................................................... 18 2.4 Design Analysis ......................................................................................... 18 2.4.1 Field Visit ............................................................................................... 18 2.4.2 Classification and Technical Standards .................................................. 19 2.4.3 Road Layout and Alignment ................................................................... 20 2.4.4 Corridor study during Pre-Feasibility Study ............................................ 20 2.4.5 Alignment Alternative Comparisons ....................................................... 21 2.4.6 Road Cross Section ............................................................................... 27 2.4.7 Pavement .............................................................................................. 28 2.4.8 Drainage ................................................................................................ 29 2.4.9 Existing Roads Bisecting Proposed Road .............................................. 30 2.4.10 Sub-grade and Ground Treatment ......................................................... 31 2.4.11 Bridge and Tunnel ................................................................................. 32 2.4.12 Road Safety ........................................................................................... 36 2.4.13 Rural Public Transport ........................................................................... 41 2.4.14 ITS in Traffic Management and Public Transport ................................... 43 2.4.15 Major Work Quantities and Costs .......................................................... 44 3. Key Issues and Next Steps .............................................................................. 45 AECOM Asia Company Limited SD3-1 Asian Development Bank Jiangxi Pingxiang Integrated Rural-Urban Infrastructure Development Project List of Figures Figure 1: Pingxiang Municipality ................................................................................ 4 Figure 2: Pingxiang Transport Map ............................................................................ 6 Figure 3: Existing Transport Network in Pingxiang .................................................... 7 Figure 4: Proposed Road .......................................................................................... 9 Figure 5: Black Spots of Accident on Existing Roads............................................... 10 Figure 6: Locations of Schools in the Road Project Area .......................................... 11 Figure 7: Location of Traffic Count ........................................................................... 13 Figure 8: Traffic Zones ............................................................................................ 14 Figure 9: Desire Line Diagram of Projected Daily trips ............................................ 15 Figure 10: Traffic loading on 2020 Road Network .................................................... 17 Figure 11: Traffic loading on 2032 Road Network .................................................... 17 Figure 12: Alignment Alternatives Layout during Pre-FS .......................................... 21 Figure 13: Alignment Alternatives for the Section (K22+100~K30+682) ................... 22 Figure 14: Scheme A—At-grade Intersection .......................................................... 24 Figure 15: Scheme B—Grade-separated Interchange ............................................. 24 Figure 16: Alignment Alternatives for Ending Section at Yinhe and Xuanfeng .......... 26 Figure 17: Proposed Typical Cross Section ............................................................. 27 Figure 18: Proposed Cross Section at Bridge .......................................................... 28 Figure 19: Typical Cross-section of Concrete Small Box Girder ............................... 34 Figure 20: Proposed Dimension Limits of Tunnel .................................................... 35 Figure 21: Open Cut Section of Tunnel.................................................................... 35 Figure 22: PPTA Example Recommendations for Intersection Improvement ........... 37 Figure 23: Examples of Warning Signs .................................................................... 39 List of Tables Table 1: Project Demand for Car, Passenger and Freight .......................................... 8 Table 2: Location of Traffic Counts .......................................................................... 14 Table 3: Growth Projection ...................................................................................... 16 Table 4: Demand Forecast Results（pcu/d） .......................................................... 16 Table 5: Technical Design Parameters of the Road ................................................. 19 Table 6: Comparison for Road Alignments (K22+100 to K30+682) .......................... 22 Table 7: Comparisons for Work Quantities and Cost ............................................... 23 Table 8: Road Alignment Scheme Bisecting Luxi Expressway Collector .................. 25 Table 9: Comparisons for Work Quantities and Cost Estimates ............................... 25 Table 10: Comparison for Road Alignment Schemes (K38+440 to K43+956) .......... 26 Table 11: Comparison for Work Quantities and Cost Estimates ............................... 27 Table 12: Proposed Road Pavement for Carriageway ............................................. 28 Table 13: Comparison of Types of Drainage Ditch Structure .................................... 29 Table 14: Existing Roads Bisecting the Project Road .............................................. 30 Table 15: Ground Treatment Methods ..................................................................... 32 Table 16: List of Proposed Bridges .......................................................................... 33 AECOM Asia Company Limited SD3-2 Asian Development Bank Jiangxi Pingxiang Integrated Rural-Urban Infrastructure Development Project Table 17: Road Accident Records ............................................................................ 36 Table 18: New Rural Bus Routes ............................................................................. 41 Table 19: Existing Bus Routes Improvement ........................................................... 42 Table 20: Summary of Work Quantities and Costs................................................... 44 Abbreviations AC = asphalt cement CNY = Chinese Yuan FSR = Feasibility Study Report ITS = Intelligent Traffic Systems km = kilometer; km2 = square kilometer LDI = Local Design Institute m = meter; m2 = square meter; m3 = cubic meter mm = millimeter mu = mu, Chinese unit of land measure O-D = origin-destination pcu/d = passenger car unit per day RUC = Road User Cost VOC = vehicle operating cost AECOM Asia Company Limited SD3-3 Asian Development Bank Jiangxi Pingxiang Integrated Rural-Urban Infrastructure Development Project 1. Introduction 1.1 Background 1. Pingxiang, known as “the western gate” of