Crane bridges are handling devices used to lift and transfer heavy loads, widely used in the industry, especially the nuclear industry. Assessing the dynamic behavior of crane bridges is important for nuclear safety. Indeed, within the context of seismic Level 1 Probabilistic Safety Assessment (PSA) studies, these devices have been identified as significant contributors in the probability of core meltdown when their failure occurs. Moreover, modeling the mechanical behavior of such a device under seismic load is a challenging scientific and engineering exercise, due to the importance of accounting for geometrical nonlinearities such as frictional sliding and local shocks. The behavior of the anchoring system seems to be one of the primary causes of failure of this equipment when loading is assumed beyond the design conditions. Consequently, it is necessary to enhance the knowledge on the mechanical behavior of this equipment in order to fully understand its response to earthquakes and, in particular, to assess the efforts transmitted to the anchors. Therefore, the objective of the SOCRAT international benchmark , launched in June 2020 and organized under the umbrella of the OECD/NEA, is (i) to identify best modeling practices of crane bridge devices in the beyond design domain and (ii) to identify relevant failure criteria. Within the framework of the SOCRAT benchmark, works focus on the identification of best modeling practices in a deterministic context. In addition, a further objective is to improve knowledge of crane bridges modeling practices to assess the associated seismic fragility with a high confidence level so that issues related to the definition of seismic fragilities may be considered in a future activity.