There were V-shaped ditches on each side of the road, each  deep and  wide. These were situated roughly  from the south kerb and  from the north kerb, making a total width for the road zone of  to the ditch centres.
There were V-shaped trenches on each side of the road, about  deep and  broad. These were placed roughly  from the south curb and  from the north curb, making a total width for the road zone of  to the ditch edges.