Design from home

My house is on a river and there is a bridge right in front of it that has an interesting design. The bridge is made of large stones that make walls on the shore and protrude into the flow of the river. The bridge is a common spot for people to jump into the water to cool off in the summer. The design of the bridge restricts the size of the river’s path causing the current to drastically speed up under the bridge making it unique.