Economic Feasibility Study for The
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EEECONOMIC FFFEASIBILITY SSSTUDY FOR THE PPPROPOSED EEEXTENSION TO THE SSSOUTHERN EEEXPRESSWAY Final Report Transportation Engineering Division, Department of Civil Engineering University of Moratuwa 313131 ststst October 2007 University of Moratuwa Economic Feasibility Study for Proposed ESH i University of Moratuwa Economic Feasibility Study for Proposed ESH Table of Contents Study Team __________________________________________________________ xix CHAPTER 1 Background ___________________________________________ 1-1 1.1 Objectives of the Study ________________________________________ 1-1 1.2 Control Points ________________________________________________ 1-1 1.3 Physical Features of the Proposed Project _________________________ 1-1 1.4 Scope of Work and Activities ____________________________________ 1-1 1.5 Revised Work Plan ____________________________________________ 1-2 1.6 Deliverables _________________________________________________ 1-3 CHAPTER 2 Data Collection _________________________________________ 2-1 2.1 Review of Previous Studies and Data Available _____________________ 2-1 2.2 Maps _______________________________________________________ 2-1 2.3 Traffic and Transport Surveys ___________________________________ 2-1 2.3.1 Roadside Traffic Survey ______________________________________ 2-2 2.3.2 Bus Passenger Origin Destination Survey ________________________ 2-3 2.4 Trace Verification Survey _______________________________________ 2-4 2.5 Rapid Social Assessment _______________________________________ 2-4 2.6 Household and Institution Surveys ________________________________ 2-5 2.7 Geotechnical Surveys _________________________________________ 2-5 CHAPTER 3 Project Impact Area _____________________________________ 3-1 3.1 Ruhunupura Development Plan _________________________________ 3-1 3.1.1 Hambantota Sea Port Development _____________________________ 3-3 3.1.2 Tsunami Housing Scheme ____________________________________ 3-7 3.1.3 Weerawila International Airport ________________________________ 3-7 3.1.4 Extension of the Railway to Kataragama _________________________ 3-8 ii University of Moratuwa Economic Feasibility Study for Proposed ESH 3.2 Industrial Zones _____________________________________________ 3-10 3.3 Urban Development Centres in Hambantota District _________________ 3-11 CHAPTER 4 Alternative Corridors _____________________________________ 4-1 4.1 Objectives of the Extension _____________________________________ 4-1 4.2 Preliminary Alternative Corridors Considered _______________________ 4-2 4.2.1 Distances to Control Points ___________________________________ 4-4 4.2.2 Intra-Regional Mobility-Connections to Urban Centres ______________ 4-4 4.3 Land Use & Acquisition ________________________________________ 4-5 4.4 Soil Condition ________________________________________________ 4-8 4.5 Hydrology ___________________________________________________ 4-8 4.6 Modified Alternative Corridor ____________________________________ 4-8 CHAPTER 5 Stakeholder Meetings (Scoping Sessions) ____________________ 5-1 5.1 Hambantota Meeting __________________________________________ 5-1 5.2 Colombo Meeting _____________________________________________ 5-2 CHAPTER 6 Final Corridor __________________________________________ 6-1 6.1 Potential Intersections with National Roads _________________________ 6-1 6.2 Inter- Regional Connectivity _____________________________________ 6-1 6.2.1 Extension of the Hambantota-Gonnoruwa Road to Thanamalwila ______ 6-3 6.2.2 By-Pass to Hambantota ______________________________________ 6-3 6.3 Intra-Regional Connectivity _____________________________________ 6-4 6.3.1 Upgrading National Roads Connecting the ESH ___________________ 6-4 6.3.2 By-pass to ESH in Hambantota Area ____________________________ 6-5 CHAPTER 7 Review Of The Southern Transport Development Project ________ 7-1 7.1 Geotechnical Design & Construction ______________________________ 7-1 7.2 Pavement Design & Construction ________________________________ 7-2 iii University of Moratuwa Economic Feasibility Study for Proposed ESH 7.3 Geometric Design & Construction ________________________________ 7-2 7.4 Drainage ____________________________________________________ 7-2 7.5 Interchanges _________________________________________________ 7-2 7.6 Staged Construction ___________________________________________ 7-2 7.7 Land Use and Social Matters ____________________________________ 7-2 CHAPTER 8 Traffic Analysis _________________________________________ 8-1 8.1 Design Options _______________________________________________ 8-1 8.2 Route of the ESH _____________________________________________ 8-1 8.2.1 Links, Nodes and Distances ___________________________________ 8-1 8.2.2 Crossing of Minor Roads _____________________________________ 8-4 8.3 Traffic Forecasting ____________________________________________ 8-4 8.3.1 Existing Traffic Patterns ______________________________________ 8-4 8.3.2 Origin Destination of Flows ____________________________________ 8-4 8.3.3 Future Traffic Generators _____________________________________ 8-5 8.3.4 Socioeconomic Development Scenarios _________________________ 8-6 8.3.5 Forecast Year ______________________________________________ 8-6 8.3.6 New Roads to be Included ____________________________________ 8-7 8.3.7 Other Modes of Transport ____________________________________ 8-7 8.3.8 Scenarios for Benefit Cost Analysis _____________________________ 8-7 8.3.9 Forecast using Growth Factor Method ___________________________ 8-8 8.3.10 Estimation Using TransPlan Traffic Demand Forecasting _________ 8-13 8.4 Analysis of Scenarios _________________________________________ 8-13 8.5 Generated Traffic ____________________________________________ 8-14 8.6 Port Based Traffic ____________________________________________ 8-16 iv University of Moratuwa Economic Feasibility Study for Proposed ESH CHAPTER 9 Land Use & Acquisition __________________________________ 9-1 9.1 Land Acquisition Issues ________________________________________ 9-1 9.2 Prices of Lands that may need to be acquired _______________________ 9-2 9.3 Resettlement Costs ___________________________________________ 9-3 CHAPTER 10 Earth Works and Gradients ______________________________ 10-1 CHAPTER 11 Safety Considerations __________________________________ 11-1 11.1 Accidents on A2 _____________________________________________ 11-1 11.2 Safety Features Recommended _________________________________ 11-2 CHAPTER 12 Geometric Design ______________________________________ 12-1 12.1 Geometric Design Criteria _____________________________________ 12-1 12.2 Design Traffic _______________________________________________ 12-1 12.3 Number of Lanes & Staged Construction __________________________ 12-4 12.4 Design Speed _______________________________________________ 12-4 12.5 Lane Width _________________________________________________ 12-5 12.6 Shoulders & Centre Median ____________________________________ 12-7 12.7 Grade _____________________________________________________ 12-7 12.8 Intersections & Control ________________________________________ 12-7 12.9 Minor Roads and Service Roads ________________________________ 12-9 12.10 Operating Speed _________________________________________ 12-10 CHAPTER 13 Soil and Geological Conditions ____________________________ 13-1 13.1 Geotechnical Concerns _______________________________________ 13-1 13.2 Data Collection & Analysis _____________________________________ 13-1 13.3 Soil Types __________________________________________________ 13-2 13.4 Ground Improvement Methods for Embankment Construction on soft Grounds 13-3 v University of Moratuwa Economic Feasibility Study for Proposed ESH 13.5 Crossing of Nilwala River Basin _________________________________ 13-4 13.6 Foundations for bridges and other structures _______________________ 13-5 13.7 Stability of the side slopes _____________________________________ 13-6 13.8 Availability of Construction Material ______________________________ 13-7 CHAPTER 14 Hydrology ____________________________________________ 14-1 14.1 Hydrological Data & Analysis ___________________________________ 14-1 14.2 Hydrology of the Project Area __________________________________ 14-2 14.2.1 Rainfall ________________________________________________ 14-2 14.2.2 Temperature ____________________________________________ 14-2 14.2.3 Relative Humidity ________________________________________ 14-3 14.2.4 Wind Speed ____________________________________________ 14-3 14.2.5 Stream Network & Drainage Pattern _________________________ 14-3 14.2.6 Available Topographic Maps _______________________________ 14-4 14.2.7 Catchment Areas ________________________________________ 14-4 14.3 Hydrometric Data & Sources ___________________________________ 14-5 14.3.1 Rainfall (Point Rainfall) ____________________________________ 14-5 14.3.2 Rainfall Intensity Duration Frequency Curves __________________ 14-5 14.3.3 Runoff Coefficients _______________________________________ 14-5 14.4 Other Climatic Data __________________________________________ 14-7 14.4.1 Sunshine hours __________________________________________ 14-7 14.4.2 Evaporation ____________________________________________ 14-7 14.4.3 Flow Gauging ___________________________________________ 14-7 14.5 Possible Drainage Related Environmental Impacts from Construction ___ 14-8 14.5.1 Flooding and Drainage ____________________________________ 14-8 14.5.2 Erosion problem _________________________________________ 14-8 vi University of Moratuwa Economic