Road upgrading to increase freight and passenger transport capacity requires surveying services, carried out at every stage of construction. During the construction of road sections designed as curves or arcs, their shape must be constantly monitored. During surveying, it is necessary to determine the elements of curves, in particular the radius and length of the curve, as well as the bisector, tangents, and angle of return of the tangents. The article presents a methodology for determining the radii of curves on highways using a GNSS system receiver with planar rectangular coordinates derived through post-processing using the Trimble Geomatics Office (TGO) software. In addition, the authors present the results of measurements of the height markers of the bottom layer of the substructure on the section from measuring point 1015+40 to measuring point 1020+00 of the Astana-Petropavlovsk highway. On the test object, tests were carried out on the technical condition of the pavement. The results were determined by the parameter. The highway section was also examined geometrically on the basis of levelling measurements. The paper proposes a methodology for road construction work that divides the measurements into two stages: initial — based on GNSS technology, and a second one — based on the levelling method.