SqueeSARTM is an efficient tool for high precision monitoring of deformation of the Earth’s surface and is based on the use of a time series of satellite radar images. Italferr has recently started cooperating with Tele-Rilevamento Europa, that has developed the SqueeSARTM technique, opening the way to a series of applications in the railway field, in all life phases of the infrastructure, from the design phase to the construction and operation phases. Linear infrastructures, such as railway lines, can benefit from the SqueeSARTM technique due to its capability of covering large areas of the surface without any need of installing in situ instruments, analyzing data in a limited amount of time, allowing millimetric precision to be reached in the estimation of differential displacements. Moreover, the availability of historic archives of satellite images, dating back to 1992, allows to study the historic time series of displacements. In the design phase of a new infrastructure, the SqueeSARTM technique can provide a useful contribution to alignment choice. Such information along with geological and geotechnical data can be extremely valuable to detect sliding areas, deep gravitational deformations, or other large scale phenomena that can affect the infrastructure. The paper describes the results obtained in the preliminary design phase of the new line Venezia-Trieste, which crosses a complex geotechnical context. In the construction phase, satellite radar data cannot be used as a real-time monitoring due to the revisiting time of the satellites currently being used. However, considering the growing investments in new satellite radar sensors, it is reasonable to assume that in the near future there will be systems offering daily acquisitions. In any case, it is already an extremely useful tool which can be used as a complementary monitoring tool. The case study illustrated in the paper, regarding the tunnel of the High Speed/High Capacity Railway Bologna Junction, demonstrates how satellite radar data can provide displacement data covering a wider area than the area which is generally controlled by conventional monitoring techniques, and also offer the possibility to get ante operam information taking advantage of the historical data archives. The comparison between satellite radar data and conventional technique (topographical) measurements confirms the accuracy of the SqueeSARTM technique. The SqueeSARTM technique can also been applied in the operation phase to control long–term deformations. In the case of the Scianina-Tracoccia tunnel, the satellite data have been analysed to control the effectiveness of the stabilization measures of the landslide that affected the tunnel under construction and to verify the slow exhaustion of the deformations.