remnants of these two roman "viæ" still exist under the modern roads "rua do antónio ricardo rodrigues" and "rua do josé luís de morais" (the town's two main streets during the middle ages, which connected the upper and lower districts of sacavém). even during this period sacavém was an important river-crossing; the romans built a bridge that remained active until the 17th century (according to several sources, such as francisco de holanda or miguel leitão de andrade). this bridge was a natural continuation of the roads and connected sacavém with the northern river bank; therefore indirectly included in the famous antonine itinerary. the parish's coat-of-arms includes a symbolic depiction of the roman bridge. also in the vicinity, an epigraphic inscription is said to have existed (nowadays unknown), but referred to in the corpus inscriptionum latinarum). various epigraphs have suggested that this totem identified the roman magisterial administration of the rural locality.