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Infrastructure investment key to unlocking emerging Asia-Europe trade corridor

Infrastructure investment key to unlocking greater connectivity in Central Asia

Spanning from the People’s Republic of China through Central Asian countries along the Caspian Sea to Europe, the Trans-Caspian Corridor is an increasingly important channel for transportation and cross-border trade. The corridor also has significant potential as a driver of inclusive and sustainable development, but considerable financing gaps and other challenges must be addressed to meet its rapidly expanding infrastructure needs.

According to the Asian Development Bank (ADB) (2017) report, Meeting Asia’s Infrastructure Needs, Central Asia must invest $33 billion in infrastructure, or 6.8% of the region’s gross domestic product (GDP), annually until 2030 to meet the region’s infrastructure requirements. This increases to $38 billion, or 7.8% of the region’s GDP, if we include infrastructure investment needs for climate change mitigation and adaptation. Infrastructure investment in Central Asia currently depends on public sources of funding, as the vast distances between cities, the land-locked location, and low population density all contribute to restricting private investment.

A new ADBI Press book edited by Azhgaliyeva and Kalyuzhnova (2021), Unlocking Transport Connectivity in the Trans-Caspian Corridor, presents a unique study on the impacts of physical infrastructure, especially transport (road, rail, and ports) and energy infrastructure, on trade and economic development in the Central Asia Regional Economic Cooperation Program (CAREC) region, and complements the new CAREC Transport Strategy 2030 (ADB 2020) on cross-border transport and logistics. The six CAREC economic corridors, (i) Europe–East Asia, (ii) Europe–Mediterranean–East Asia, (iii) Russian Federation–Middle East and South Asia, (iv) Russian Federation–East Asia, (v) East Asia–Middle East and South Asia, and (vi) Europe–the Middle East and South Asia, connect the landlocked CAREC countries to other Eurasian and global markets.

Major barriers to infrastructure investment in any region include the long duration of projects, high up-front costs, large scale, high risks, and uncertain benefits. However, Central Asia faces unique, additional barriers. Compared to South Asia, Southeast Asia, and North Asia, Central Asia has much lower population densities, and there are longer distances between cities. Cross-border connectivity is also more important in Central Asia than elsewhere in Asia, where domestic connectivity can provide sufficient demand for infrastructure. Cross-border connectivity should be expanded to support the region and promote continuous development.

The Trans-Caspian Corridor provides the potential for increases in cross-border trade, GDP, investment, and employment, and a decrease in transportation costs. The benefits of infrastructure projects, however, depend on many factors, including population density, connectivity, access to complementary infrastructure, and economic growth. Greater regional connectivity in Central Asia will create business opportunities for firms and increase access to markets and jobs for individuals. In addition, the Trans-Caspian Corridor will allow the participating countries to benefit from export and import activities as well as transit and, thus, the positive spillover effects will be greater.

The coronavirus disease (COVID-19) has significantly affected public revenues and spending. Health, education, and social security expenses have increased in many Asian countries, placing constraints on government spending on infrastructure. However, infrastructure is an essential source of economic growth. Investments in quality infrastructure will bring spillover effects for jobs, trade, and income, among others. Cross-border connectivity could increase these spillover effects of infrastructure investments.

Against this backdrop, the ADBI book examines the increased regional connectivity that the Trans-Caspian Corridor can bring to the countries of Central Asia. It can boost market access as well as attract new trade, business opportunities, and employment. However, fully realizing these benefits will depend on infrastructure investment to improve transportation linkages and cost efficiency in the region, which is challenged by low population densities and large distances.

The book features new research on the development of the Trans-Caspian Corridor, its trade and economic potential, and infrastructure expansion challenges and opportunities. It comprehensively reviews policies for enabling infrastructure investment and overcoming the barriers, such as long project timelines, sizable up-front costs, and high risks. It also analyzes policy drivers for further infrastructure development and the technical, social, political, and economic contexts in which these changes occur.

The findings show that investments in infrastructure lead to reductions in transportation costs and times, which have a positive effect on trade between the CAREC countries, with other regions, and on transit trade. Increased trade can stimulate economic development through business development, job creation, and better quality of life. However, the magnitude of the impacts varies by country, transport corridor, the type of infrastructure (road, rail, airport, or seaport), and duration (whether long-term or short-term). Also, the economic impacts of infrastructure investments are not spatially limited to the regions where projects are located because population and industries may shift to areas with better connectivity under corridor developments.

The main policy recommendations provided in the book can be summarized as follows:

  • Greater policy dialogue and collaboration on Trans-Caspian Corridor growth issues are needed to achieve reductions in trade barriers and costs.
  • Investments in improvements of existing corridors or new corridors (such as the Uchkuduk–Kyzylorda economic corridor) can positively impact the economic development of countries along the Trans-Caspian Corridor.
  • Infrastructure investments can be a useful tool to stimulate economies while reducing the negative impact of the pandemic on the economy via the spillover effects on trade, income, and employment.

Read the book here.


Asian Development Bank (ADB). 2017. Meeting Asia’s Infrastructure Needs. Manila: ADB.

ADB. 2020. CAREC Transport Strategy 2030. Manila: ADB.

Azhgaliyeva, D., and Y. Kalyuzhnova, eds. 2021. Unlocking Transport Connectivity in the Trans-Caspian Corridor. Tokyo: ADBI.




Dina Azhgaliyeva

About the Author

Dina Azhgaliyeva is a research fellow at ADBI.
Yelena Kalyuzhnova

About the Author

Yelena Kalyuzhnova is a director at the Centre for Euro-Asian Studies and vice-dean (international) at Henley Business School, University of Reading.

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