The primary purpose of a road drainage system is to remove the water from the road and its surroundings. The road drainage system consists of two parts: dewatering and drainage. “Dewatering” means the removal of rainwater from the surface of the road. “Drainage” on the other hand covers all the different infrastructural elements to keep the road structure dry.
Every road and lane in the city is dug-up twice for laying pipeline for water supply scheme in the edge of road and for the UGD in the middle of the road. The dug up roads remain uncovered for more than 10 days in the road junctions in case of UGD to construct inspection chambers and manholes.