This paper presents the monitoring horizontal and vertical displacements of railway which heavy cranes run on using special geodetic techniques for the purpose provaiding rialway stability and safe working cranes on it. To quaranty that heavy cranes work safly, a rialway should be just horizontal– a small error of milimeters leveling is allowed according to working conditions for cranes. A rialway shoud also maintain its spaces to facilitate the crane motion on it. Monitoring railway vertical displacements involve measuring the relative vertical displacements of target points that are distributed along the railway in two cases: static and dynamic. vertical displacements determined by precise leveling which are performed using digital high accuracy level. The precise leveling measurments of target points have been connected to stable benchmark that are located in surrounding terrain of railway for purpose of further studies. In this paper the alignment method was used to monitoring the railway horizontal displacements using digital rulers and total station provided by a prism fixed forcely on the railway. This is done by measuring the small bias angles of the targat points which are distributed along the railway. This research has illustrated the efficiency of alignment method in order to calculate the horizontal displacements of railway axis.