Belgium has prospered as a transit zone for the continental core of Europe. In recent decades, transport and logistics activities have maintained and even strengthened their very central role in the regional economy. This is especially the case in Antwerp, the second largest port in Europe (but the leader for value added activities). In Belgium, traffic management and transport infrastructure have always been regarded as a national priority since the creation of the modern state in 1830. As strange it may sound for a country commonly depicted as being “wide open”, the borders, especially with its competing Northern neighbour, are a key feature in the country’s transport organization. From this perspective, they have to be considered in two senses: first, the state borders established in the 19th century, the basis of national unity, and second and more recently, the emerging borders between the federal entities. It might be thought that the border effect belongs to the past since the establishment of the common market. On the contrary: the Belgian case helps us understand how borders remain highly significant for constructing and re-constructing transport infrastructure within national territories.