Comprehensive construction of machine rooms, utility connections, ventilation, lighting, safety, communications, and centralised control systems for the tunnels along the Durango–Mazatlán Highway, including civil works, electromechanical installations, and associated works. The scope included the manufacture and installation of forced ventilation systems, interior and exterior lighting, electronic safety systems, communications and traffic control systems, as well as the construction of the Tunnel Control Centre. The works were carried out in accordance with strict quality standards and technical regulations, including testing, commissioning, and final handover for operation.
