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Description
The concept of NAFTA Superhighways can be traced back to the 1991 Intermodal Surface Transportation Efficiency Act (ISTEA), a federal transportation law that initially outlined the idea. Since then, the vision has expanded significantly to include large-scale, multi-modal corridors—often described as “superhighways on steroids.” These routes are designed to accommodate numerous car lanes, dedicated truck lanes, parallel freight and passenger rail lines, and utility corridors carrying electricity, oil, natural gas, and water.
While many transportation systems contribute to North America’s trade network, the NAFTA Superhighway is often highlighted as a central corridor, incorporating key routes such as the Lázaro Cárdenas–Kansas City Transportation Corridor, the Trans-Texas Corridor, and the Quebec–Chicago Corridor. Major components include U.S. interstates 29, 94, and 35, with Laredo, Texas, and Detroit, Michigan, serving as two of the most critical entry points due to their high volumes of annual semi-truck crossings (Bureau of Transportation Statistics, 2023). The prominence of this corridor reflects the deeply interconnected nature of regional supply chains. This integration was further reinforced in 2023 with the merger of Canadian Pacific and Kansas City Southern, forming CPKC—the first single-line railway linking Canada, the United States, and Mexico. This development marked a significant step toward improving efficiency and competitiveness across North American logistics networks. As CPKC President and CEO Keith Creel noted, the merger introduces much-needed competition at a time when resilient supply chains are more essential than ever. With the continued rise of nearshoring and cross-border manufacturing, demand for streamlined transportation infrastructure is increasing. As a result, the development of integrated, high-capacity corridors remains vital to supporting the complexity and scale of North America’s evolving supply chains.