Waterlogging in a underpass- the water level rises above danger level in the under pass roads as the two side of underpass is concrete wall and water cannot freely flow away due to no drainage . Waterlogging in a underpass- the water level rises above danger level in the under pass roads as the two side of underpass is concrete wall and water cannot freely flow away due to no drainage . The only way to over come it to convert the under pass to a tunnel model so as to avoid the water from entering the underpass road as it is converted to a tunnel model with roof like in tunnel The roofing of the underpass and levelling the road with proper drainage will avoid rain way to flow inside the underpass that is now open with side wall that is collecting the water on the road in under pass now resulting road closing or buses to pass water logging roads The roofing the underpass like a tunnel with concrete roof and the roof space over underpass roads gives space