One of the factors that cause the destruction of bridge piers is the erosion of the foundation. As this phenomenon spreads, the scour created around the pier will weaken the foundation and threaten the destruction of the entire structure. In this research, a combination of slot and crack methods is used to control this phenomenon. Using slots is one of the new methods in controlling local scour. The evaluation was conducted in a laboratory around the bridge pier in clear water conditions for 4 hours for each test. First, the pier without a gap and collar (control sample), then the combined method with a gap and collar in different positions were examined and compared. In the combined method of integrating the collar in 2 positions: low (on the bed level) and middle (distance between the bed and the water surface), the gap with an opening rate D of 25% (25% of the base diameter), i.e. with a width of 1 cm of the base diameter and a length of 2 cm, was placed in 3 positions: high (1 cm gap above the water surface), middle and low (1 cm gap below the sedimentary bed). The tests were conducted at two flow rates of 11.5 and 23 liters per second. The combined models were compared in different modes with the control sample (without collar and gap). The results showed that the presence of gap and collar has a better performance in reducing scour than the control sample. Also, in the case of low collar and gap, the scour rate was reduced by 62.5 percent and showed the highest performance in scour control.