Challenges

Senegal’s rural regions, which are central to the country’s agricultural economy, face critical infrastructure deficits that limit development opportunities. According to the Emerging Senegal Plan, approximately 9,912 kilometers (i.e. 60% of the national road network) remains unpaved, significantly hindering rural connectivity. This disconnect restricts access to essential services such as markets, healthcare, and education, reinforcing cycles of poverty and exclusion. Conventional road construction methods are costly, unsustainable, and ill-suited to the local environment. In response, the IsDB-Probase pilot project introduced 63 kilometers of innovative, environmentally friendly roads aimed at lowering maintenance costs and enhancing access.

Addressing this challenge is vital for achieving SDG 9 (resilient infrastructure) and SDG 11 (sustainable communities). Senegal’s path forward requires scalable, cost-effective road technologies, local capacity-building, and structured maintenance frameworks to ensure long-term durability which are key enablers for rural development, economic inclusion, and improved quality of life.

Toward a Solution

In alignment with the Emerging Senegal Plan, a transformative initiative was launched to address a longstanding challenge like limited rural connectivity, which has historically isolated communities and impeded inclusive economic development. The project focused on constructing durable, cost-effective roads to reduce maintenance expenditures while enhancing access and overall social well-being. It directly contributes to SDG 9 (Industry, Innovation, and Infrastructure) by promoting resilient infrastructure, and SDG 11 (Sustainable Cities and Communities) by improving rural accessibility.

The intervention introduced Probase Road Technology, a soil stabilization and sealing solution known for its durability and low maintenance requirements. A 63-kilometre pilot road project was implemented under the Islamic Development Bank’s (IsDB) Reverse Linkage mechanism, a model of South-South and Triangular Cooperation (SSTrC). This framework enabled the transfer of knowledge, expertise, and technology from Probase Malaysia to Senegal, along with capacity-building support for local contractors and technical collaboration with a local university.

A critical component of the initiative was the rigorous technical and environmental assessment led by Ageroute, the national road agency in Senegal and the Government’s implementation partner. This assessment ensured the adaptability of Probase’s technology to the country’s specific climate and road usage patterns. The successful implementation across four diverse regions demonstrated the robustness and relevance of the technology.

To further enhance long-term sustainability, Probase offered a 10-year maintenance guarantee which is a key value addition that significantly de-risked post-construction phases and ensured operational integrity. The roads are projected to last 15 to 20 years, offering substantial savings in recurrent maintenance costs. This supports Senegal’s progress toward SDG 9 by improving infrastructure quality and durability, and SDG 11 by physically connecting underserved communities to services and markets.

The outcomes of the project were significant. The 63 km road reduced maintenance costs and cut travel times by 50%, while increasing daily traffic and economic activity. Agricultural productivity and tourism saw tangible improvements due to easier market access and logistics. Community members now benefit from improved access to schools, clinics, and local markets, reinforcing the goals of SDG 11. Additionally, by easing the transport of food products, the initiative laid the groundwork for future progress on SDG 2 (Zero Hunger), particularly in reducing post-harvest food losses.

One of the key lessons from this engagement is the importance of comprehensive and timely feasibility studies. Although time-consuming, such studies are essential to ensure government buy-in and technical viability. Proactive planning in this regard should be standard practice for similar infrastructure projects. Furthermore, aligning such interventions with national development strategies, like the Emerging Senegal Plan, is critical to ensure strategic relevance and long-term impact. Effective and continuous stakeholder communication was also essential in addressing challenges promptly and ensuring smooth project implementation.

In 2023, IsDB organized a knowledge-sharing workshop in Senegal to disseminate the project’s outcomes. Attended by representatives from several IsDB member countries, namely, Gambia, Guinea, Sierra Leone, and Cameroon, the workshop catalyzed the development of a pipeline of similar projects. One tangible result of this momentum is a forthcoming collaboration with Sierra Leone, planned for implementation in 2025

The Senegalese model is highly replicable for countries facing similar rural connectivity challenges. Key success factors include strong institutional partnerships, localized capacity development, and the use of adaptable, proven technologies. The IsDB’s operational frameworks provide a solid foundation to scale and replicate this model across its member countries, as reflected in growing interest from countries like Uganda and Sierra Leone.

This initiative exemplifies the impact and potential of South-South and Triangular Cooperation, particularly as enabled by the IsDB’s Reverse Linkage mechanism. Through the structured transfer of knowledge, technology, and expertise from Probase Malaysia to Senegal, this partnership demonstrates the effectiveness of IsDB’s strategic approach to SSTrC. The Bank’s dedicated Reverse Linkage policy and operational framework remain a pioneering feature among Multilateral Development Banks (MDBs), underscoring its commitment to inclusive and sustainable development through cooperation.

Ultimately, this project underscores the transformative power of SSTrC in addressing local development challenges through shared innovation and collective action. It reaffirms the IsDB’s leadership role in embedding SSTrC as a strategic pillar of development cooperation, delivering real-world impact across its member countries.