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Expressway Construction in China: A World Bank Perspective
Christopher R. Bennett Sr. Transport Specialist East Asia and Pacific Region
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Presentation Outline Background to China’s Expressway Program
Building an Expressway in China: Seeing is believing… 2
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China’s Road Investment Strategy
Creating a balanced network with capacity increase across the range of road classes All villages connected to road grid by all-weather road 2010 Eastern and Central Provinces 2020 Western Provinces All cities > 200,000 connected to expressway network 3
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Road Development 4
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Not Just Road Investments
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Expressway Network Development
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China’s Expressway Network
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China’s Expressway Investments Compared to USA and Japan
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Benefits 9
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Sources of Financing US$ 25 b 10
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Tolls Very High 11
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Financing Challenge The next phase of the NEN construction will cost ~US$225 billion with heavy demand over the next 15 years Need significant increase in maintenance funding Western provinces face a funding gap. Options: Private equity National toll financing system for redistributing income Implemented fuel charges 12
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Financing Capabilities
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Maintenance Funding 14
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Overloading Major Problem
High toll rates and poor enforcement lead to overloading 60-91% overloaded in one survey (Anhui) 15
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Traffic and Their Effects
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The Future China will continue building some 5,000 km/year of expressways Major investments will be made in rural roads to support the ‘Harmonious Society’ initiative Major investments in road maintenance 17
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Success Factors Clear long-term development plans over five-year programs Simultaneous implementation by each province and municipality Pooling of national and provincial government resources Most on new alignments Many qualified construction firms and design engineers. 18
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Building an Expressway in China
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Construction Costs Very low by international standards
Typically US$2-2.5 million/km for subgrade and civil works US$7 million/km for tunnels Example – 2006 Jiangxi III highway project 117 km with 8.5 km of tunnels (max 3.2 km) and 19 km of bridges (longest > 1 km) US$3.2 m/km for subgrade and civil works 20
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Chinese Contractors Very efficient with resourcing of work
Rapid mobilization and completion Heavy use of manual labor 21
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Some Photos … 22
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Retaining Walls Usually built using waste from tunnels
Employ local farmers for laborers 23
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Viaducts Use standard designs Casting on site 24
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Launching of Beam 25
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More Viaducts… 26
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More Viaducts … 27
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More Viaducts … 28
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Digging Foundations – By Hand
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Tunnels Tunneling machines are not used 30
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At the Tunnel Face 31
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Issues Design Construction Supervision
Very mechanical approach to designs Usually do not show innovation Safety often an afterthought Construction Try to build too quickly Poor quality control Supervision Supervision consultants not assertive enough 32
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Examples of Problems … Safety equipment in wrong location
Improper designs Missing safety equipment 33
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More Problems … Bad Co-ordination Between Designers (and poor supervision) Designs not changed to reflect actual site conditions Improper borrow area 34
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Improper Interchange Design
Expressway Entrance Expressway Exit Ramp Correct As Built 35
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The Future By 2020 China will have the largest expressway network in the world This will enhance China’s economy by significantly lowering transport and logistics costs As expressways are built in more challenging areas, China will develop innovative techniques The next challenge will be maintenance … but that is another story 36
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