Construction of road walk is one of the first things to do before the construction of road either major road or just street.
The major reason this is very important is that during construction of the street road, there will be a place to channel the water to. Though, the drainage is not deep enough but manageable for the street. This type of drainage is only useful on the street and not on a major road.
This is about one metre deep gutter covered by slabs of about 14 inches thickness
This is the part of the drainge that has been completed. It shows the result or should I say the end result of the previous photos earlier.