The reconstruction of bridges is always accompanied by various surveying tasks, including the geodetic base plan, river surveying for hydro-engineering calculations, laser scanning and photography of bridges. We use a variety of tools for river surveying, including a motorboat, an electron tachymeter, and sonar. We have been involved in pre-reconstruction surveys of the Valgejõe, Piibe, Muna, Undla, Albu, Poaka, and Kaatvere bridges.