Following its involvement in the construction of metro lines 1 and 2 in Cairo alongside Colas Rail and Alstom, Bouygues Travaux Publics is now boring tunnels for line 3. On completion, scheduled for 2020, the link will be around 30 kilometres long. It will cross the Egyptian capital from east to west, and will link the city with the airport. The complete metro network will form a public transport network with an essential task to perform in relieving traffic congestion in Cairo, where car traffic is at saturation point. Up to 2 million passengers per day are expected to travel on the new section of metro.