Reposición de losas de concreto hidráulico de 36 cms de espesor módulo de ruptura 48 kg/cm2 en zona de cobro 171 Pte. Ignacio Zaragoza y Modernización de los sistemas de protección de tierras apartarrayos y variaciones de corriente y voltaje de la Plaza de Cobro No.- 171 Puente Internacional Ignacio Zaragoza.

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