This paper focuses on the role of infrastructures in place-making. We approach the concept of urban discontinuity, ways to produce and read landscapes and new paradigms in terms of urban form. The impact of infrastructures in landscape is based on Lisbon Metropolitan Area recent infrastructures. In order to discuss solutions for the impact of infrastructures in landscape, the relation between accessibilities, urban grid and urban tissue and the production of consolidated, non-consolidated and traced public spaces will be approached. The paper focuses on four nodes on the motorway A2, the main access to Lisbon by south. To conclude, a model to deal with urban discontinuities will be presented, integrating as a new element the concept of new urban structure.