The current year is a time of hard work on the development of Polish infrastructure. We are still constructing long segments of expressways and motorways, in near future more and more railway projects are about to start. With such a big scale of investment, the advantages of drones become more clearly visible. UAVs help in decision making and management during the construction and they are also indispensable in crisis situations like breach of contract with the general contractor. We describe our experience from S3 Nowa Sól – Legnica construction site. The task III, Kazimierzów – Lubin Północ was abandoned by the Italian contractor Salinini. The construction inventory was carried out for the General Directory for National Roads and Highways (GDDKiA). In this project, in addition to standard procedures, we had to take into consideration the mining subsidence.