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A tender to build the third stretch of the Mexico City-Toluca high-speed railway attracted 10 bids.
Among the companies that participated in consortiums bidding on the stretch were Isolux de México, Sacyr Construcción México, Grupo Promotor de Desarrollo e Infraestructura, Tradeco Infraestructura, and Operadora Cicsa and Grupo Promotor de Desarrollo e Infraestructura.
Firms that bid were Peninsular Compañía Constructora, Constructora de Proyectos Viales de México and Gami Ingeniería e Instalaciones.
Economic proposals ranged from 8.10bn pesos (US$562mn) to 9.81bn pesos, according to documents published on the federal government's procurement website, CompraNet.
The Isolux de México-led consortium presented the lowest bid, 8.10bn pesos (without tax), and the consortium led by Grupo Promotor de Desarrollo e Infraestructura presented the highest, 9.81bn pesos (without tax).
Three firms withdrew from the process: Construcción y Filiales Mexicanas, Ingenieros Civiles y Asociados, and Constructora y Edificadora GIA+A.
The tender contract is due to be awarded on Thursday.
Last month a consortium led by Spanish engineering firm CAF won the main tender for the Mexico City-Toluca railway. The 13.6bn-peso contract involves the provision of trains, rail and communication infrastructure, ticketing facilities and associated services.
The Mexico City-Toluca passenger train line will extend 57.7km and expected to require total investment of around 38bn pesos.