A spokesperson for Irish Water said: “Following consultation with residents and businesses adjacent to the works associated with the Glenbrook road closure, [contractors] Ward and Burke intend to implement a full 24-hour road closure.
“The contractor will deliver notification of this to the residents and businesses adjacent to the works. The works will continue to be 7am to 7pm and the contractor will call to residents if there is an opportunity to work later. The road will open on Sunday from 9.30pm.”
Councillor Marcia D’Alton said the closures could lead to the work being carried out quicker.
“This wasn’t planned but they made such progress during the previous two weekends that they are hoping to repeat it.
“The benefit for us is that they are about two weeks ahead of schedule as a result of being able to get these runs at the work.
“The traffic lights at Glenbrook will from now be permanently manned.
“There will be flag men on the back road to the monastery from 2-4pm every weekday to help ease school-finishing traffic through without conflict,” she added.
When all Cork Lower Harbour Main Drainage works are complete in 2021, the project will treat all wastewater from Passage West, Monkstown, Ringaskiddy, Crosshaven, Carrigaline, Glenbrook, Shanbally, Coolmore and Cobh.
The Irish Water spokesperson added: “This means 20,000 homes and businesses will be connected to the new scheme and that raw sewage will no longer be discharged into the Harbour.
“Irish Water is committed to delivering these works with the minimum disruption to residents and businesses and we appreciate that the road closure is inconvenient for residents and businesses alike.”