This study attempted to assess performances of adopted MR-damper to control the complex behavior caused by the interaction of independent continuous structures. For this, MR-damper (30kN) was designed and fabricated, and the MR-damper model was investigated using the Nonlinear Bingham Plastic Damper (NBPD). To assess experimental performances, a control test on the model structure was performed while El-centro 150% of seismic load was being applied. Then, MR-damper was placed between two independent structures to have it control independent displacement and complex behavior between the two structures. This study found that MR-damper is effective in controlling complex behavior of structures.