A major cross-continental infrastructure project linking Africa and Europe is drawing fresh global attention, as Morocco and Spain push forward plans for a subsea rail tunnel beneath the Strait of Gibraltar. The ambitious initiative is being positioned as a strategic alternative to vulnerable global trade routes such as the Strait of Hormuz, especially amid rising geopolitical tensions.
Estimated to cost between €15 billion and €20 billion, the proposed rail corridor could significantly reshape international trade if completed. Construction is not expected to begin before 2035, pending financing agreements and final approvals.
The tunnel would feature twin rail lines designed to transport both passengers and freight, cutting travel time between northern Morocco and southern Spain to about 30 minutes. If realized, it could transform North Africa into a key logistics hub, strengthening its role in global supply chains and improving access between African producers and European markets.
Growing concerns over potential disruptions in the Strait of Hormuz—one of the world’s most critical oil transit routes—have intensified interest in alternative corridors. Any prolonged blockage there could severely impact global energy supplies and push oil prices sharply higher.
Against this backdrop, the Strait of Gibraltar is emerging as a vital strategic passage. As the only natural link between the Atlantic Ocean and the Mediterranean Sea, it currently handles roughly 300 vessels daily, underscoring its importance in global maritime trade.
The tunnel project itself dates back to a 1979 bilateral agreement between Morocco and Spain, though progress has been inconsistent. Recent technical studies, including one conducted by German engineering firm Herrenknecht, have confirmed the project’s feasibility using modern tunnelling technology. Spanish consultancy Ineco is now working on a detailed design plan, with potential approval expected by 2027.
Once completed, the rail link is expected to stretch approximately 42 kilometres, including about 27 kilometres beneath the sea, connecting Punta Paloma in Cadiz, Spain, to Cape Malabata near Tangier, Morocco.
Beyond easing trade flows, the project aligns with broader continental goals such as boosting intra-African commerce under frameworks like the African Continental Free Trade Area.
However, significant engineering hurdles remain. Earlier plans to build a bridge across the strait were abandoned in 1996 due to extreme depths—reaching up to 900 metres—and heavy maritime traffic. The current tunnel design would run through the Camarinal Sill at depths of around 475 metres below sea level.
Engineers must also navigate complex geological conditions, including unstable rock formations and seismic risks associated with the Azores–Gibraltar fault line. Despite these challenges, experts believe the project is achievable with existing technology.
If successful, the tunnel could dramatically cut transit times, enhance trade efficiency, and cement Africa’s position as a critical player in global logistics.
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