The infrastructures included were:
Medium-voltage electrical cabling and transformer station.
Interior low-voltage electrical installations:
Ordinary, emergency and evacuation lighting, including a system for monitoring light levels.
Fire detection and extinguishing system with Fibrolaser system in tunnel and detectors in technical rooms and evacuation galleries.
Ventilation and temperature control in rooms.
Fire fighting system:
Public address subsystem
GSM telephony subsystem replacing the one in the preliminary design (Radiocomunicación TETRA).