The pioneer roads have become attractors of direct and spontaneous migration. As the pioneer roads were built, new settlements were emerging, which many of them already were in the form of new towns. The traditional settlements were marginalized, except for those, which are close to the new roads, and highways. The migratory influx strengthened the capitals of the states. Between 1960 and 1991, the urban population grew more than the total population of the region. The town’s sizes remained stable until 1970. From then, it started a process of deconcentrating, due to reduction of the participation of the big cities, and the increasing of the participation of medium and small cities, which are less than 100,000 habitants. From 1986 to 1990 the State retracted the intervention of developing the Amazon area. It was identified the that the main transportation is by highways now, the loss of importance of Belem and Manaus, due to the population no longer to be concentrated in large urban centers, the consolidation of metropolitan areas, such as Manaus, Belém, São Luís and Cuiabá, and consolidation of medium and small cities in the interior, with around 50,000