Along the 10 kilometers that a highway crosses the city of Lisbon, it generates a discontinuity of the urban fabric that results in a distinct topological development between its Northern and Southern areas. To mitigate the effect of this barrier, viaducts were built with the intent to provide a passage between the city’s Southern and Northern areas. Located in one of the main accesses to Lisbon, Campo Grande viaduct guarantees one of these urban connections and establishes one of the main Lisbon entrances.
The project aims to redistribute and reorder the public space associated with the intersection, to generate a qualified and balanced public space between the various forms of circulation, counteracting the barrier effect of the highway defining a perceivable circulation scheme that promotes safe and fluid movements.
The new circulation scheme ensures the articulation of North-South pedestrian flows along Campo Grande Garden and through the large central island that, in addition to its importance distributing pedestrian and vehicle circulation, may host cultural programming, exhibitions, markets or other temporary uses/events. The extent of this central island and the inexistence of permanent elements or structures aims at the visual clearance of the public space promoting the perception, cohesion and security of the urban area, between the South and North city areas.
Through road and pedestrian optimization, the proposal for the Campo Grande intersection allows the extension of the Campo Grande Garden to the viaduct to the North, in order to recover its previous limit: the proposed double tree grove. In this area a large meadow is created which, in addition to the fruition of visitors, will function as a retention basin to provide greater stormwater management capacity in a flood-prone area.