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52 SMT007 MAGAZINE I SEPTEMBER 2026 The decisive upgrade came five years later, in 1899, when S. Pearson & Son Ltd. was granted a conces- sion to renew, maintain, and operate the line, and add telegraph infrastructure. Perhaps most impor- tant, however, was fixing the terminal ports at Coat- zacoalcos and Salina Cruz. It worked, and the route handled substantial interoceanic cargo and passenger traffic. But the opening of the Panama Canal in 1914 sharply reduced the line's strategic value. 3 The modern CIIT is not a brand-new from- scratch railway; in other words, it is the revival and modernization of the historic Line Z trans-isthmus route. As such, the rehabilitation of Line Z began in 2019. Official project information lists 16 stations, three transfer yards, freight service, and scheduled passenger service. 1 The passenger opening was held on Dec. 22, 2023, when President Andrés Manuel López Obrador inaugurated the Line Z passenger service in Salina Cruz. Passenger service was temporarily discontinued in early 2026 after a derailment, but freight traffic continues unaffected. One challenge facing CIIT is that existing manu- facturing facilities are not located along the CIIT. Data México shows that Mexico's computer and electronic product manufacturing base is currently concentrated in states such as Baja California, Jalisco, and Chihuahua, with $1.63 billion in FDI in the subsector during January to September 2024. 4 Electronics supply chains depend heavily on the fast movement of imported components, assem- blies, spare parts, and export-ready products. A company could import inputs from Asia through the Pacific, assemble or test in a CIIT development hub, and then move finished goods toward Gulf/Atlantic routes or onward into North America. In strategic terms, CIIT gives Mexico a southern nearshoring platform that complements the existing electronics clusters in Baja California, Jalisco, Chihuahua, and other northern/western states. The CIIT's long-term prospects for success include encouraging Mexican manufacturing to build out an ecosystem along the CIIT's route. This creates an express line wherein input goods arrive at either end, are transported to an assembly facility somewhere along the route, and then either trans- ferred to the next step in production as local CIIT traffic or sent back to one of the ports for distribu- tion as a finished good. This added accessibility is not possible along the canal, giving the CIIT a leg up as a pass-through manufacturing hub. There are incentives as well. Mexico's Economy Ministry lists electrical and electronic activities and semiconductors among the eligible activities for CIIT Development Hubs, with benefits including accelerated depreciation, an aggressive income- tax discounts (100% for the first three years, 50% for years 4-6). The CIIT is more than simply an overland alter- native to the Panama Canal. The CIIT can, if well executed and embraced by manufacturers, help Mexico move beyond regional assembly toward a deeper role as a global supply-chain player in elec- tronics, semiconductors, IT equipment, automotive electronics, and clean-energy components. The potential is there. Now it's up to all levels of govern- ment along the CIIT to attract and encourage manu- facturers to develop the full vision of the CIIT. SMT007 References 1. Official CIIT decree, Government of Mexico. 2. Interoceanic Corridor of the Isthmus of Tehuantepec, Mexico Projects Hub. 3. National Railroad Company of Tehuantepec, El Mirador, Government of Mexico. 4. Computer and Electronic Product Manufacturing, Data Mexico.