An internal combustion engine with a supercharger comprising: an internal combustion engine including a plurality of cylinders (11A, 11B, 11C, 11D); an intake passage that supplies gas to the internal combustion engine; a turbocharger-type supercharger including a turbine portion having a plurality of exhaust gas introduction passages (31AD, 31BC); and an exhaust passage including a plurality of connecting passages (22A, 22B, 22C, 22D, 23AD, 23BC) that connect the plurality of cylinders (11A, 11B, 11C, 11D) and the plurality of exhaust gas introduction passages (31AD, 31BC), wherein exhaust gas discharged from the internal combustion engine flows through the exhaust passage, characterized in that the internal combustion engine comprising: a bridge passage that connects two or more of the plurality of connecting passages (22A, 22B, 22C, 22D, 23AD, 23BC) to each other; a branch passage connected to the bridge passage; and a first opening and closing device provided into the bridge passage to open and close the bridge passage, the branch passage serves as an EGR passage having one end connected to the bridge passage and the other end connected to the intake passage, and the internal combustion engine further comprises: a heat exchanger provided on the EGR passage to cool exhaust gas flowing through the EGR passage; a second opening and closing device provided downstream of the heat exchanger in the EGR passage to open and close the EGR passage; and a third opening and closing device that opens and closes the EGR passage upstream of the heat exchanger. an internal combustion engine including a plurality of cylinders (11A, 11B, 11C, 11D); an intake passage that supplies gas to the internal combustion engine; a turbocharger-type supercharger including a turbine portion having a plurality of exhaust gas introduction passages (31AD, 31BC); and an exhaust passage including a plurality of connecting passages (22A, 22B, 22C, 22D, 23AD, 23BC) that connect the plurality of cylinders (11A, 11B, 11C, 11D) and the plurality of exhaust gas introduction passages (31AD, 31BC), wherein exhaust gas discharged from the internal combustion engine flows through the exhaust passage, characterized in that the internal combustion engine comprising: a bridge passage that connects two or more of the plurality of connecting passages (22A, 22B, 22C, 22D, 23AD, 23BC) to each other; a branch passage connected to the bridge passage; and a first opening and closing device provided into the bridge passage to open and close the bridge passage, the branch passage serves as an EGR passage having one end connected to the bridge passage and the other end connected to the intake passage, and the internal combustion engine further comprises: a heat exchanger provided on the EGR passage to cool exhaust gas flowing through the EGR passage; a second opening and closing device provided downstream of the heat exchanger in the EGR passage to open and close the EGR passage; and a third opening and closing device that opens and closes the EGR passage upstream of the heat exchanger. a bridge passage that connects two or more of the plurality of connecting passages (22A, 22B, 22C, 22D, 23AD, 23BC) to each other; a branch passage connected to the bridge passage; and a first opening and closing device provided into the bridge passage to open and close the bridge passage, the branch passage serves as an EGR passage having one end connected to the bridge passage and the other end connected to the intake passage, and the internal combustion engine further comprises: a heat exchanger provided on the EGR passage to cool exhaust gas flowing through the EGR passage; a second opening and closing device provided downstream of the heat exchanger in the EGR passage to open and close the EGR passage; and a third opening and closing device that opens and closes the EGR passage upstream of the heat exchanger. a heat exchanger provided on the EGR passage to cool exhaust gas flowing through the EGR passage; a second opening and closing device provided downstream of the heat exchanger in the EGR passage to open and close the EGR passage; and a third opening and closing device that opens and closes the EGR passage upstream of the heat exchanger.