A team of archaeologists from the National History Museum of Transylvania carried out preventive archaeological research on the 3A2 Nădășelu-Topa Mică section of the Transylvania highway. Following the excavations, 16 archaeological sites (conventionally numbered from 1 to 16) were identified and partially investigated. The works started in 2017, but stopped after a few months, for reasons independent of the archaeological research. The finds on this highway sector cover a broad chronological period from prehistory to the early medieval period. Among these, it is worth mentioning the discovery of a Roman road in the area of Nădășel and a cemetery from the era of migrations (Gepid) near the town of Șardu. These are added to those from 2017, namely a Roman village north of the village of Sânpaul, a medieval one near Mihăiești and a very large Neolithic settlement at Topa Mică.
