- Over the past three decades, Colombia has partnered with the IDB Group to boost infrastructure investment, particularly from the private sector. The country worked closely with the IDB to strengthen regulations, institutions, and public capacity to structure and manage public‑private partnerships (PPPs).
- Building on this foundation, IDB Invest has become the leading bank and anchor investor in the country’s fourth‑ and fifth‑generation road concession programs.
- The experience shows that strong institutional frameworks, combined with long‑term financing, are key to mobilizing private investment in infrastructure.
Colombia has emerged as one of the region’s most dynamic markets for public-private partnerships (PPPs) in infrastructure, ranking third out of 26 countries for its enabling environment in the 2024 Infrascope, with $20.6 billion committed from 2014 to 2023, mostly in transport.
This focus on transport responds to long-standing structural constraints. Years of low public investment resulted in a fragmented and poor-quality road network, even as most freight depends on them. This has increased travel times and logistics costs, making Colombia one of the most expensive countries in the region for ground transport.
A Long-Term Partnership with the IDB Group
Improving connectivity and increasing infrastructure investment has therefore been central to Colombia’s long-term strategy, which the IDB Group has supported for three decades. The IDB Group comprises the Inter-American Development Bank (IDB), IDB Invest and IDB Lab.
Through a sequenced, programmatic engagement comprising five investment loan operations, one policy-based loan, and seven technical cooperation projects, the IDB has strengthened regulations, institutions, and public‑sector capacity for structuring and managing PPPs.
These investments paved the way for increased private investment, leading to 36 road PPP contracts, including nine financed by IDB Invest (see the note at the end of this post for more details about the projects financed by the IDB, IDB Invest and IDB Lab).
Strengthening Institutional and Regulatory Frameworks
Colombia has been advancing transport PPPs since the mid-1990s. The first three generations of highway concession models faced persistent challenges, including unbalanced risk allocation between the public and private sectors that led to construction delays, cost overruns, and land acquisition problems.
These hard-won lessons fed into a series of institutional and regulatory reforms, supported by the IDB and other partners, that have substantially strengthened how PPPs are developed, managed, and financed.
A key early step was the transformation of the Ministry of Transport’s concessions unit into the Agencia Nacional de Infraestructura (ANI) in 2011, with the technical capacity to oversee transport PPPs, as well as establishing dedicated PPP programs within the Departamento Nacional de Planeación (DNP) and creating the Financiera Nacional de Desarrollo (FDN) to develop long‑term financing instruments, attract investors, and deepen capital‑market participation in infrastructure.
A major milestone followed in 2012 with the country’s new PPP Law, which clarified risk allocation, incorporated performance-based payments, and expanded PPPs into sectors such as health and education.
Consequently, private investment in infrastructure, mainly in roads, increased significantly, rising from an annual average of 10 trillion Colombian pesos in the 1990s to 32 trillion pesos from 2008 to 2019, according to DNP.
Learning by Doing and Scaling Through Successive Programmatic Phases
Backed by stronger regulations and institutions, Colombia launched its fourth generation (4G) road concessions program in 2013, followed by the 5G program in 2021, each building on the design, risk allocation, and financing lessons from the previous phase.
For example, the 4G program introduced a standardized concession contract across all projects, also including clear guidelines for key issues such as dispute resolution and early termination, as well as step-in rights for investors and clear risk-allocation thresholds for land acquisition, compensation payments, and utility relocation. These provisions helped improve project bankability and contributed to the overall success of the program.
As of 2025, the 4G program comprised approximately 5,000 km of roads across 30 projects for a total investment of 65.6 trillion pesos (approximately $15 billion), while the 5G program includes about 1,000 km of concessioned roads through six projects for a total of 15.2 trillion pesos (approximately $3.4 billion), according to ANI.
Scaling Private Investment
Building on the foundation laid by IDB support, IDB Invest has become the leading bank and anchor investor in 4G and 5G projects, combining long‑term local-currency financing with capital market innovation and private capital mobilization. Since 2015, it has committed $1.2 billion and directly mobilized $1.5 billion from other investors for nine projects, making large, capital‑intensive PPPs viable.
This includes investments in strategic foreign-trade corridors, including routes connecting Colombia with Venezuela and Ecuador, as well as roads linking the country’s main Caribbean ports and Buenaventura on the Pacific coast with key production and population centers.
As the market has matured, IDB Invest’s instruments have also evolved: in 2022–2023, it served as anchor investor in large, locally denominated social bond issuances for two highways, mobilizing institutional investors and linking financing to social outcomes.
Impact on the Ground
While at different stages of construction, these IDB Invest-supported concessions are delivering tangible results. To date, they have built or upgraded more than 1,200 km of roads with high-quality standards, benefiting over 30 million people through reduced travel times, improved safety, and greater connectivity, while supporting an average of 15,000 construction jobs and 1,200 operation and maintenance positions.
These gains are already visible on key highways. As of 2025, average travel times on completed sections of Ruta del Cacao fell by over one-third, while the journey from Medellín to Cañasgordas on Autopista al Mar 1 dropped from approximately 162 to 133 minutes, nearly 30 minutes faster.
Better roads and safety features such as pedestrian crossings, speed bumps, lighting, and signage have also improved safety and overall service quality. For instance, faster and more reliable access for emergency services has reduced average response times to road accidents and other incidents by 39% relative to targets.
Overall, these improvements are expected to generate an estimated $9.3 billion in net economic benefits for society.
The Road Ahead
Colombia is transferring the institutional, regulatory, and financial capabilities developed in the road sector to a broader pipeline of projects—including rail, hospitals, waterways, and logistics—advancing a multimodal infrastructure agenda for regional integration and national connectivity.
While Colombia's road PPP journey has faced many challenges, from complex terrain and land acquisition to evolving environmental and social expectations and road safety, each generation of projects has turned these hurdles into opportunities to strengthen the model.
Experience shows that durable results depend not only on sound design, but also on preventive supervision, strong contractor management, and meaningful community engagement throughout the project lifecycle.
These hard-earned lessons are now powering Colombia's next wave of multimodal infrastructure, with the IDB Group as a committed partner on the road ahead.
Long-term IDB support for institutional and regulatory reforms paved the way for IDB Invest to become the leading investor in 4G and 5G road concessions.
Ricardo Lara, Marcos Siqueira, and Alfonso Perez also contributed to this piece.
Note: IDB Group operations include: (i) five IDB investment loans (CO0179, CO0263, CO-L1065, CO-L1131, CO-L1265), one policy-based loan (CO-L1162), and five technical cooperation operations (CO-T1139, CO-T1294, CO-T1386, CO-T1416, CO-T1681); (ii) nine IDB Invest operations (CO-L1159, 12252-01, 11895-05, 13868-01, 13522-01, 14094-01, 14523-01, 14522-01, 15239-01); and (iii) two IDB Lab technical cooperations (CO-M1004, CO-M1031).