This study presents a comparative analysis of three commonly used methods for soil characterization: Dilatometer Marchetti (DMT), Cone Penetration Test (CPT), Dynamic Probing Heavy (DPH). The investigations were performed in Germany during the fall of 2023 for the construction of a bridge over the Rhine. A total of 11 DPH tests, 30 CPT, and 14 DMT with a maximum investigation depth of 20 m were conducted along with 35 Boreholes with a maximum investigation depth of 40 m. The field investigations were carried out at multiple locations along the proposed bridge alignment, encompassing mainly granular soils commonly found in the study area. Results indicate that DMT provides valuable information on soil stiffness and shear strength. CPT proves reliable for assessing soil stratigraphy and shear strength profiles, while DPH offers a quick assessment of relative soil strength and stratigraphy at shallow depths. The combination of these methods enabled a comprehensive understanding of the soil conditions for the bridge construction. Despite its limited use in Germany the DMTs provided valuable data on soil strength, stratigraphy, and stiffness. Limitations were identified for each method, such as DMT and CPT challenges in very dense or gravelly soils presenting difficulties reaching the planned investigation depth. DPH's limitations mainly consists in providing detailed stratigraphy. The proposed paper will show the comparability of the results of the DMT, CPT and DPH with respect to the encountered soil conditions close to the Rhine. Furthermore, a comprehensive study will be presented comparing the interpreted CPT and DMT results, applying well documented approaches from literature (e.g. [1] [2]), against the actual encountered soil profile obtained from the deep boreholes. As a result of this study, updated correlations between DMT, CPT & DPH results, and the soil stratigraphy will be presented.