The geodesic engineering has always had an important contribution to monitoring and deformation analysis of man-made structures. In order to analyze the vibrations, this paper will present configuration of sensors suitable for determination and measurement the bridge oscillations, which is based on the microwave interferometry principle with sub-millimeter precision and a sampling frequency up to 200 Hz. All presented above, gives the possibility to determine the bridge deformation in real time. Microwave interferometry has recently emerged as an innovative technology, suitable for non-contact monitoring of large structures vibration. The new radar systems-designed and developed by Italian researchers-are now available and capable to measure simultaneously, static and dynamic deformation of the points on a large structure with high accuracy. At the end of the article are presented some project examples in which terrestrial radar interferometry has been used with good results in terms of the analysis accuracy for monitoring of static or dynamic bridge deformations. In the conclusion of the paper are highlighted the advantages of terrestrial radar interferometry technology for displacements and deformations analysis and the bridges structure oscillations.