Ministry of Rural Development Asian Development Bank MINISTRY OF RURAL DEVELOPMENT KINGDOM OF CAMBODIA Asian Development Bank: TA No 7199 - CAM PREPARING THE PROVINCIAL/RURAL ROAD ASSET MANAGEMENT PROJECT Final Report March 2010 TA7199 Preparing the Provincial/Rural Road Asset Management Project CURRENCY EQUIVALENTS (As at September 2009) Currency Unit – Riel Rl 1.00 = $ 0.00024 $ 1.00 = RI 4,150 Note: Cambodian Riel (RI) also has the acronym KHR ABBREVIATIONS AADT Annual Average Daily Traffic ADT Average daily traffic ADB Asian Development Bank ADO Asian Development Outlook BEC Board of Engineers Cambodia CBR California Bearing Ratio CC Commune Council CNCTP Cambodia National Community of Transport Practitioners CSF Commune and Sangkat Fund D&B Design and Build D&D Decentralization and Deconcentration DBST Double Bituminous Surface Treatment DCP Dynamic Cone Penetrometer DDIS Detailed design, implementation and supervision consultant DFID Department for International Development (UK) DOE Department of Environment EA Executing Agency ECI Early Contractor Involvement EIA Environmental Impact Assessment EIC Engineering Institution of Cambodia (and see BEC) EIRR Economic Internal Rate of Return EMP Environmental Management Plan EMMP Environmental Monitoring and Management Plan ESA Equivalent standard axle (identical to ESAL) ESAL Equivalent Standard Axle Load EWC Extended Warranty Contracts FDI Foreign Direct Investment FRMR Fund for Road Maintenance and Repair FWD Four Wheel drive TA7199 Preparing the Provincial/Rural Road Asset Management Project GDP Gross Domestic Product GPS Global Positioning Satellite (receiver) GVW Gross Vehicle Weight HALO A Trust dedicated to the removal of the debris of war HDM4 Highway Development and Management Model HGV Heavy Goods Vehicle HH Household IBRD International Bank for Reconstruction and Development IEE Initial Environmental Examinations IMF International Monetary Fund IPDP Indigenous People Development Plan IRC Inter-Ministerial Resettlement Committee IRI International Roughness Index IRR Internal rate of return ITC Institute of Technology Cambodia JICA Japanese International Cooperation Agency IDC Interest during construction ILO International Labour Organisation LRCS Location Referencing Condition Survey MAG Mines Advisory Group MEF Ministry of Economy and Finance MMS Maintenance Management System MPWT Ministry of Public Works and Transport MRD Ministry of Rural Development MOWRAM Ministry of Water Resources and Meteorology MUV Manufactures Unit Value index NCDM National Committee for Disaster Management NCS National Committee Secretariat NMT Non-motorized transport NPV Net Present Value NR National Road NRSC National Road Safety Committee NWRDP North-Western Rural Development project ODA Official Development Assistance PCU Passenger Car Unit PCSE Passenger Car Space Equivalent PDPWT Provincial Department of Public Works and Transport PDRD Provincial Department of Rural Development TA7199 Preparing the Provincial/Rural Road Asset Management Project PIA Poverty and Social Analysis PIU Project Implementation Unit PM Periodic Maintenance PMU Project Management Unit PPTA Project Preparation TA PRIP Provincial and Rural Infrastructure Project PSA Poverty and Social Assessment PSC Pre-Stressed Concrete RGC Royal Government of Cambodia RID Road Infrastructure Department Rl Riel RM Routine Maintenance RMR Routine Maintenance and Repair RNDS Road Network Development Study (JICA) RoW Right of Way RP Resettlement Plan RSAP Road Safety Action Plan RTAVIS Road Traffic Accident and Victim Information System SBST Single Bituminous Surface Treatment SEACAP South East Asia Community Access Programme SEIS Social and Environmental Impact Study SEU Socio-Economic Unit TA Technical Assistance TOR Terms of Reference US$ United States Dollar UCS Unconfined Compressive Strength UXO Unexploded Ordnance VOC Vehicle Operating Costs WB World Bank WFP World Food Programme WG Working Group WIM Weigh in Motion (axle load measuring system) NOTES i. The fiscal year (FY) of the Government of Kingdom of Cambodia ends in December ii. In this report, "$" refers to US dollars. TA7199 Preparing the Provincial/Rural Road Asset Management Project PREPARING THE PROVINCIAL/RURAL ROAD ASSET MANAGEMENT PROJECT Contents Executive summary Maps 1 INTRODUCTION ................................................................................................................. 1 2 ROAD UPGRADING ........................................................................................................... 2 2.1 CANDIDATE ROADS ................................................................................................... 2 2.2 SELECTION CRITERIA................................................................................................ 3 2.3 SELECTED TARGET ROADS...................................................................................... 4 2.4 PROJECT DESCRIPTION ........................................................................................... 6 2.5 EXISTING PROJECT ROADS...................................................................................... 6 2.5.1 Kampong Cham Province ...................................................................................... 6 2.5.2 Kampong Thom Province ...................................................................................... 8 2.5.3 Kampong Chhnang Province ................................................................................. 9 2.5.4 Pursat Province ................................................................................................... 10 2.5.5 Battambang Province .......................................................................................... 10 2.5.6 Kampong Speu Province ..................................................................................... 11 2.5.7 Siem Reap Province ............................................................................................ 12 3 ROAD IMPROVEMENTS .................................................................................................. 13 3.1 ROAD DESIGN .......................................................................................................... 13 3.1.1 Engineering surveys ............................................................................................ 13 3.1.2 Existing pavement strengths................................................................................ 14 3.2 EXISTING TECHNICAL SPECIFICATIONS AND DESIGN STANDARDS.................. 14 3.2.1 Geometric design standards ................................................................................ 14 3.3 DRAINAGE STRUCTURES ....................................................................................... 16 3.3.1 Design for repair or replacement ......................................................................... 16 3.4 ROAD FURNITURE ................................................................................................... 20 3.4.1 Road safety considerations ................................................................................. 20 4 TRAFFIC ........................................................................................................................... 21 4.1 INTRODUCTION ........................................................................................................ 21 4.2 TRAFFIC SURVEYS .................................................................................................. 21 4.2.1 Classified Counts ................................................................................................ 21 4.2.2 Vehicle Types ...................................................................................................... 22 4.2.3 Moving Observer Counts ..................................................................................... 23 4.2.4 Automatic Counts ................................................................................................ 23 4.3 ESTIMATES OF BASE YEAR TRAFFIC .................................................................... 23 4.3.1 24 Hour Adjustment ............................................................................................. 24 4.3.2 Daily Traffic Variation .......................................................................................... 24 4.3.3 Seasonal Variation .............................................................................................. 24 4.3.4 Derivation of Base Traffic Levels ......................................................................... 25 4.3.5 Traffic Growth ...................................................................................................... 27 4.3.6 Future Equivalent Standard Axle Loadings .......................................................... 31 5 PAVEMENT DESIGN ........................................................................................................ 33 5.1 PAVEMENT DESIGN OPTIONS ................................................................................ 35 5.2 CEMENT CONCRETE PAVEMENT TRIAL ................................................................ 37 6 CONSTRUCTION MATERIALS ........................................................................................ 39 TA7199 Preparing the Provincial/Rural Road Asset Management Project 6.1 SUBGRADE CORRECTION MATERIALS.................................................................. 39 6.2 EXISTING GRAVEL WEARING COURSE MATERIALS ............................................ 39 6.3 AGGREGATES FOR ROAD