The present study deals with numerical simulation of fluid flow within a single-groove journal bearing under laminar regime and steady-state condition. The lattice Boltzmann method was employed to simulate lubricant flow in the bearing. A linear interpolation method was implemented to satisfy the no-slip condition on the bearing boundaries. The validation with previously published data reveals that the present methodology can evaluate the flow field of journal bearings with an acceptable accuracy. Also, since the present approach was entirely local in behavior it can be adapted for parallelization.