According to old folks, Cabatuan was already a barrio even before the coming of the Spaniards and Americans. A river w/c flowed down the mountain ranges from the adjacent town of Sual in the southwest bisected the barangay all the way from the west to the neighboring barrio, Balangobong. So, the Americans constructed a steel bridge to link the town of Sual and Alaminos in the northeast. They named the bridge as Casulming Bridge in honor of its maker.
On the other hand, people in the place referred to it as Cabatuan, presumably, because of the river that was “full of boulders and stones.” As the local dialect implies Cabatuan literally means “full or place of stones.”