The water is flowing left to right, not static. Which means they need to put in a culvert to allow the water to pass under the road.Just where is the pipe work to let the water pass under the road way it will just get wasted away in heavy rain.I’m glad they showed full crossing with fill to other shore ! Usually they end the fill short of full crossing to other shore !This site has been heavily excavated previously. Water is moving because it is being displaced by road fill. The road is probably for access to more ground they can remove fill dirt from.