With the improvement of construction techniques and urban development, tunnels are now built under our cities.Read more
That means mainly lack of surface place which is now the case not only in mega cities but in nearly all town and cities around the world.Read more
Since the end of the 19th century underground tunnels have been used for mass transit transportation in the cities.Read more
The most well known network of pedestrian tunnels has been developed by the city of Montreal. This underground network has been created to allow inhabitants to circulate in the city during the winter.Read more
Another use of the underground space in cities can be the transport of goods getting in and out of the city.Read more
Increased traffic in cities during the last decades has caused a quick congestion of surface parking. Therefore, new solutions were required.Read more
In urban environment, the first tunnels have been built for mass transit networks.
Nowadays, mass transit networks continue to developp themselves, but urban tunnels are also beeing built for roads and railways.
In cities, underground space is also used for parkings and stations and is redecovered for the transport of goods (containers, mails...).