This document examines the effects of public and private investment in transportation infrastructure on the Colombian economy in the short and long run. In particular, it analyzes the historical evolution of the transportation infrastructure in Colombia, reviews the institutional framework and reforms carried out in recent years in this sector, examines the characteristics of investment in transport infrastructure, and estimates the contribution of infrastructure to economic growth. Besides, it characterizes the evolution of port activity and estimates the short-run economic effects of recent investments in infrastructure in the regions. The results show that investment in transportation infrastructure in Colombia has been historically low, which has limited its economic growth. Also, public investment in transportation infrastructure exhibits pro-cyclical behavior. On the other hand, institutional failures of planning, regulation, and corporate governance persist that hinder the development of the sector. Consequently, the contribution of transport infrastructure to economic growth has decreased, and its lag constitutes a barrier to external and internal trade. These factors have led the transportation infrastructure in Colombia to lag in the international context.

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Approach
This article addresses the question: Has the delay in the provision of transport infrastructure in Colombia, caused in part by historically low levels of investment, been a significant obstacle to its economic growth and regional and international integration? The question thus poses the hypothesis that the country has an infrastructure lag, an aspect that is demonstrated in the different sections of this article. To this end, the effects of public and private investment in transport infrastructure on the economy in the short and long term are examined.
Initially, the historical evolution of transport infrastructure in Colombia is analyzed, explaining the current lagin this sector based on pre-existing conditions. Likewise, we review the institutional framework and the reforms carried out in recent years, mentioning some that are still pending. Similarly, the evolution and characteristics of public and private investment, destined for transport infrastructure in the country are examined and its contribution to economic growth and technical efficiency is estimated. Finally, the evolution of port infrastructure in Colombia is described, and the short-term economic effects of regional infrastructure investments on employment, added value, and production are estimated.
Contribution
The article analyzes the evolution of transport infrastructure in Colombia, as well as the investments made in this sector in the long term. This analysis makes it possible to determine if the lag in transport infrastructure in the country has been an impediment to achieving higher rates of economic growth. Additionally, it establishes whether infrastructure investments produce economic stimulus in the short term, especially in local economies, and examines the country's secular lag in this sector, proposing public policies to reduce it.
Investment in transport infrastructure in Colombia has historically been low, which has limited the country's economic growth.
Results
Investment in transport infrastructure in Colombia has historically been low, which has limited the country's economic growth. The results indicate the presence of a bias that restricts public investment in transport infrastructure, which exhibits procyclical behavior. In addition, institutional planning, regulatory, and corporate governance failures persist that hinder the development of this sector, factors that have led to transport infrastructure in Colombia being lagging in the international context. In the long term, the contribution of transport infrastructure to economic growth has decreased and its lag constitutes a persistent barrier to both external and internal trade.