The contracts involving railway engineering infrastructure are listed below.

• A1 - Basic infrastructure: Side walkways, mass-spring systems, slab track, main cabling, ventilation systems, cage hoist systems, pump systems, extinguishing water system, airlock doors, noise protection cladding: Arbeitsgemeinschaft Alptransit Brenner
• A2: Signalling, remote control and energy supply systems
• A3 - Substations: Traction current substations Wörgl, Münster and Fritzens
• A4 - Signal boxes: Electronic signal boxes Kundl, Münster, Stans and Fritzens
• A5 - Contact line system: Contact line system for new rail link
• A6 - ETCS Level 2: Train control system components on the new rail link and existing length to ETCS Level 2
• A7 - Track system in existing tunnel: Mass-spring system and slab track in the existing tunnel length near Stans
• A10 - Existing ÖBB systems: Railway engineering infrastructure at the connection points and realigned existing stretches of line, works on the existing ÖBB systems
• O1 - Aboveground works: External works to shaft head buildings including external systems and accesses, barriers to temporary tunnel accesses, etc.
• O2 - Demolition and reinstatement works: Site access roads, site facilities areas, etc.
• L2 - Landscaping