The use of Osterberg cell (O-cell) in axial pile load testing nowadays is expanded around the world due to the increase in construction of large diameter piles. O-cell is a sacrificial hydraulic jack (s) typically buried within the lower part of an instrumented pile to measure skin and bearing resistances. Full scale O-cell pile load test has been carried out in 2012 on a 2.50 m diameter bored pile for the St. Croix River crossing bridge piers, USA. The pile was socketed in sandstone. This paper presents a FEM for the O-Cell field load test using PLAXIS 2D. Field load-movement curves, unit skin friction and bearing were compared against the FEM results showing reasonable agreement. Measured load-transfer curves along the pile were compared with FE simulation results revealing good agreement. The equivalent top-down loadsettlement performance curve was simulated using PLAXIS 2D and compared with conventional pile load-settlement analyses based on national and international codes.