The United Republic of Tanzania Ministry of Works, Transport and Communications Tanzania National Roads Agency SUPPLEMENTAL STUDY FOR IMPLEMENTATION OF ARUSHA-HOLILI ROAD IMPROVEMENT PROJECT IN THE UNITED REPUBLIC OF TANZANIA FINAL REPORT (Executive Summary) July 2016 JAPAN INTERNATIONAL COOPERATION AGENCY International Development Center of Japan Inc. Oriental Consultants Global Co., Ltd. 6R CR（3） 16-005 The United Republic of Tanzania Ministry of Works, Transport and Communications Tanzania National Roads Agency SUPPLEMENTAL STUDY FOR IMPLEMENTATION OF ARUSHA-HOLILI ROAD IMPROVEMENT PROJECT IN THE UNITED REPUBLIC OF TANZANIA FINAL REPORT (Executive Summary) July 2016 JAPAN INTERNATIONAL COOPERATION AGENCY International Development Center of Japan Inc. Oriental Consultants Global Co., Ltd. The following exchange rate is applied to the Study 1 USD = 2,192.1 TZS=109.9 JPY (Exchange rate as of May 2016) Note: A route map (shown in the middle and bottom), referred to from EAC (2011), shows Usa River and Holili section (93.9km) and the project also includes Tengeru and Usa River section (8.2km) and Kilimanjaro International Airport access road (5.7km). Project Location Map Supplemental Study for Implementation of Arusha-Holili Road Improvement Project Schematic Route Plan proposed by F/S 50 100 Design 80 100 50 100 50 100 50 100 50 100 50 100 50 100 50 100 50 50 100 50 Speed (km/h) High Accident Area i=3.6% i=4.7% i=5.0% i=3.7% i=5.8% H i=5.2% i=4.8% M M i=3.8% i=4.5% VCR=5700 i=3.5% i=4.0% i=3.6% i=4.4% M VCR=5000 H M VCR=5200 Alignment at Roundabout Vertical Grade: 5% VCR=5000 Crest Vertical Curve: 5,200m i=5.9% Existing Bridge (Kikafu River) Existing Bridge (Karanga River) 50 100 50 50 50 50 50 100 Design 100 100 50 50 100 100 100 50 100 100 100 100 50 Speed LEGEND (km/h) Njia Panda Weigh Station Roundabouts to be improved Other Major Intersections to be improved M i=6.5% Vertical Grades not complying Geometric Design i=4.5% i=5.1% i=4.5% Standard in Tanzania H i=4.8% i=6.0% Crest Vertical Curve Radius not complying VCR=5000 M i=3.7% Geometric Design Standard in Tanzania i=3.1% Swelling Potential (High) i=3.4% M H M M M M M M M Swelling Potential (Medium) VCR=4450 M M Source: F/S & D/D Report M i=3.4% M M M Comparison of Geometric Design Standards M for Vertical Alignment (Design Speed 100 km/h) VCR=3700 Tanzania Japan AASHTO Stopping Sight m 205 160 185 Distance Max. Grade 3% Flat: 3% (6% in special Rolling: 4% - 3% exception Mountain: case) 6% Min. 6,500 Medium to High Swelling Potential of Subsoil reported by F/S & D/D Report Vertical Crest m 10,500 (preferable 5,200 (Existence of Black Cotton Soil to be confirmed by Geotechnical Investigation under this Study) Curve over 10,000) Radius 3,000 Sag m 5,100 (preferable 4,500 over 4,500) Supplemental Study for Implementation of Arusha-Holili Road Improvement Project in the United Republic of Tanzania Final Report (Executive Summary) Table of Contents Project Location Map Schematic Route Plan proposed by F/S Chapter 1 Introduction ........................................................................................................................................ 1 Chapter 2 Project Rational .................................................................................................................................. 2 Chapter 3 Review of Previous F/S ..................................................................................................................... 3 Chapter 4 Traffic demand forecast ..................................................................................................................... 4 Chapter 5 Study of Alternative Road and Bridge Plan ...................................................................................... 6 Chapter 6 Construction and Implementation Plan ........................................................................................... 15 Chapter 7 Environmental and Social Studies ................................................................................................... 18 Chapter 8 Preliminary Cost Estimate ............................................................................................................... 25 Chapter 9 Preliminary Project Evaluation ........................................................................................................ 26 Chapter 10 Conclusion and Recommendation .................................................................................................. 26 Abbreviation AADT Annual Average Daily Traffic IUCN International Union for Conservation of AASHTO American Association of State Highway and Nature and Natural Resources Transportation Officials JICA Japan International Cooperation Agency AC Asphalt Concrete KIA Kilimanjaro International Airport AfDB African Development Bank kN Kilo Newton AHP Analytical Hierarchy Process LC Local Currency BH Borehole LGAs Local Government Agencies BOD Biochemical Oxygen Demand LOS Level of Service BOQ Bill of Quantity LRFD Load and Resistance Factor Design BS British Standards MDG Medium Development Goals CBR California Bearing Ratio MGV Medium Goods Vehicles CIF Cost, Insurance and Freight MOF Ministry of Finance CO Carbon Oxide MOWTC Ministry of Work, Transport and COD Chemical Oxygen Demand Communication COI Corridor of Impact MP Master Plan CSIR Council for Scientific and Industrial MPa Mega Pascal Research MR Resilient Modulus D/D Detailed Engineering Design NA Normal Traffic Loading dBA Decibel NACP National HIV/AIDS Control Program DBM Dense Bituminous Macadam NB Abnormal Traffic Loading DO Dissolved Oxygen NEMC National Environment Management DRC Democratic Republic of Congo Council DTM Dense Tar Macadam NEP National Environment Policy EAC East African Community NGO Non-Governmental Organization EF Equivalent Factors NOx Nitrogen Oxides EIA Environmental Impact Assessment NPRS National Poverty Reduction Strategy EIRR Economic Internal Rate of Return NPV Net Present Value EMA Environmental Management Act O&M Operation and Maintenance EMP Environmental Management Program OD Origin and Destination ESAL Estimation of Design Traffic Loading ODA Official Development Assistance ESIA Environmental and Social Impact PAH Project Affected Household Assessment PAPs Project Affected Persons F/S Feasibility Study PC Prestressed Concrete FC Foreign Currency PCU Passenger Car Unit FOB Free On Board PM Particular Matter GCA Game Controlled Area PO-RALG President's Office Regional GDP Gross Domestic Product Administration and Local Government GL Ground Level PPP Public–Private Partnership GOT Government of Tanzania PSI Present Serviceability Index GPS Global Positioning System R/A Roundabout GRDP Gross Regional Domestic Product RAP Resettlement Action Plan HCM Highway Capacity Manual RMR Rock Mass Rating HDM Highway Development and Management RoW Right of Way Tool RQD Rock Quality Designation HGV Heavy Goods Vehicles SADC Southern African Development HQ Head Quarter Community HRA Hot Rolled Asphalt SCF Standard Conversion Factor HWL High Water Level SD Deformed Bars IEE Initial Environmental Evaluation SMU Social Management Unit IR Income Restoration SN Structural Number IRI International Roughness Index SPT Standard Penetration Test Formalization Program TACAIDS Tanzania Commission for AIDS TANROADs Tanzania National Roads Agency TAWIRI Tanzania Wildlife Research Institute TDS Total Dissolved Solids TLC Traffic Load Classes ToR Terms of Reference TPBP Tanzania`s Property and Business TSS Total Suspended Solids TZS Tanzania Shilling UAV Unmanned Aerial Vehicle UCS Unconfined Compressive Strength UTM Universal Transverse Mercator VAT Value Added Tax VEF Vehicle Equivalent Factors VHGV Very Heavy Goods Vehicles VOC Vehicle Operating Cost WHO World Health Organization WHO-GPA World Health Organization Global Program on AIDS WWF World Wide Fund for Nature List of Tables and Figures Table 1 Traffic Demand Elasticity to GDP/GRDP Growth ..................................................................................... 5 Table 2 Future Traffic Demand by Section (both direction, PCU/day) .................................................................... 5 Table 3 Comparative Study for Possible Candidates Bridges for New Kikafu Bridge (Concrete Bridge) .......... 11 Table 4 Comparative Study for Possible Candidates Bridges for New Kikafu Bridge (Concrete Bridge) .......... 12 Table 5 Comparative Study for Possible Candidates Bridges for New Kikafu Bridge (Steel Bridge) ................. 13 Table 6 Comparative Study for Possible Candidates Bridges for New Kikafu Bridge (Steel Bridge) ................. 14 Table 7 Optional Superstructure with Dualling Configuration for New Kikafu Bridge ....................................... 15 Table 8 Basic Assumptions for Implementation Schedule ..................................................................................... 16 Table 9 Major Tasks of Supplemental Environmental and Social Consideration Study ...................................... 19 Table 10 Summary of Ld and Ln ............................................................................................................................. 19 Table 11 Environmental Scoping and Impact Assessment ..................................................................................... 20 Table 12 Summary of Environmental Management Directions ............................................................................. 22 Table 13 Outline of Sensitization Meetings ............................................................................................................