IGT, who are in a joint venture with Laabmayr, was commissioned to provide on-site construction supervision of the refurbishment of a total of 4 road tunnels. The Mils, Pians and Quadratsch tunnels are located half on the A12 Inntal motorway and half on the S16 Arlberg express road. The contract includes restoration and adjustments to meet the STSG (road tunnel safety law) of the Mils, Pians, Gurnau & Quadratsch tunnels.