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Optimal Investments in Africa’s Road Network

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  • Krantz, Sebastian Martin

Abstract

This paper characterizes economically optimal investments in Africa’s road network in partial and general equilibrium —based on a detailed topography of the network, road con-struction costs, frictions in cross-border trading, and economic geography. Drawing from data on 144 million trans-continental routes, it first assesses local and global network efficiency and market access. It then derives a large network connecting 447 cities and 52 ports along the fastest routes, devises an algorithm to propose new links, analyzes the quality of existing links, and estimates link-level construction/upgrading costs. Subsequently, it computes market-access-maximizing investments in partial equilibrium and conducts cost-benefit analysis for individual links and several investment packages. Using a spatial economic model and global optimization over the space of networks, it finally elicits welfare-maximizing investments in spatial equilibrium. Findings imply that cross-border frictions and trade elasticities signifi-cantly shape optimal road investments. Reducing frictions yields the greatest benefits, followed by road upgrades and new construction. Sequencing matters, as reduced frictions generally increase investment returns. Returns to upgrading key links are large, even under frictions.

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  • Krantz, Sebastian Martin, 2024. "Optimal Investments in Africa’s Road Network," Policy Research Working Paper Series 10893, The World Bank.
    • Handle: RePEc:wbk:wbrwps:10893
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    1. Dave Donaldson & Richard Hornbeck, 2016. "Railroads and American Economic Growth: A "Market Access" Approach," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 131(2), pages 799-858.
    2. Remi Jedwab & Alexander Moradi, 2016. "The Permanent Effects of Transportation Revolutions in Poor Countries: Evidence from Africa," The Review of Economics and Statistics, MIT Press, vol. 98(2), pages 268-284, May.
    3. Nicola Gennaioli & Rafael La Porta & Florencio Lopez-de-Silanes & Andrei Shleifer, 2013. "Human Capital and Regional Development," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 128(1), pages 105-164.
    4. Redding, Stephen J., 2016. "Goods trade, factor mobility and welfare," Journal of International Economics, Elsevier, vol. 101(C), pages 148-167.
    5. Robin Burgess & Remi Jedwab & Edward Miguel & Ameet Morjaria & Gerard Padró i Miquel, 2015. "The Value of Democracy: Evidence from Road Building in Kenya," American Economic Review, American Economic Association, vol. 105(6), pages 1817-1851, June.
    6. Benjamin Faber, 2014. "Trade Integration, Market Size, and Industrialization: Evidence from China's National Trunk Highway System," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 81(3), pages 1046-1070.
    7. Roberto Bonfatti & Yuan Gu & Steven Poelhekke, 2019. "Priority Roads: the Political Economy of Africa’s Interior-to-Coast Roads," OxCarre Working Papers 215, Oxford Centre for the Analysis of Resource Rich Economies, University of Oxford.
    8. Obie Porteous, 2019. "High Trade Costs and Their Consequences: An Estimated Dynamic Model of African Agricultural Storage and Trade," American Economic Journal: Applied Economics, American Economic Association, vol. 11(4), pages 327-366, October.
    9. Porteous, Obie, 2022. "Reverse Dutch disease with trade costs: Prospects for agriculture in Africa's oil-rich economies," Journal of International Economics, Elsevier, vol. 138(C).
    10. Pablo D. Fajgelbaum & Edouard Schaal, 2020. "Optimal Transport Networks in Spatial Equilibrium," Econometrica, Econometric Society, vol. 88(4), pages 1411-1452, July.
    11. Nathan Nunn & Diego Puga, 2012. "Ruggedness: The Blessing of Bad Geography in Africa," The Review of Economics and Statistics, MIT Press, vol. 94(1), pages 20-36, February.
    12. Rémi Jedwab & Adam Storeygard, 2022. "The Average and Heterogeneous Effects of Transportation Investments: Evidence from Sub-Saharan Africa 1960–2010," Journal of the European Economic Association, European Economic Association, vol. 20(1), pages 1-38.
    13. Roberto Bonfatti & Yuan Gu & Steven Poelhekk, 2019. "Priority roads: The political economy of Africa's interior-to-coast roads," Discussion Papers 2019-04, University of Nottingham, GEP.
    14. Burgess, Robin & Jedwab, Remi & Miguel, Edward & Morjaria, Ameet & Padró i Miquel, Gerard, 2013. "The Value of Democracy: Evidence from Road Building in Kenya," Department of Economics, Working Paper Series qt32m4z70c, Department of Economics, Institute for Business and Economic Research, UC Berkeley.
    15. Bajzik, Josef & Havranek, Tomas & Irsova, Zuzana & Schwarz, Jiri, 2020. "Estimating the Armington elasticity: The importance of study design and publication bias," Journal of International Economics, Elsevier, vol. 127(C).
    16. Burgess, Robin & Jedwab, Remi & Miguel, Edward & Morjaria, Ameet & Padró i Miquel, Gerard, 2015. "The Value of Democracy: Evidence from Road Building in Kenya," Department of Economics, Working Paper Series qt4275g61h, Department of Economics, Institute for Business and Economic Research, UC Berkeley.
    17. Fiorini, Matteo & Sanfilippo, Marco & Sundaram, Asha, 2021. "Trade liberalization, roads and firm productivity," Journal of Development Economics, Elsevier, vol. 153(C).
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