Local vehicle access to the Marina will only be allowed for residents, businesses and sporting clubs.
City Hall say the route from the entrance to Páirc Uí Chaoimh to the to the Church Avenue junction will be closed 24 hours a day, 7 days a week with unmanned barriers in place.
Meanwhile the pedestrianisation of Oliver Plunkett street will be permanently reinstated this Monday, with plans for Paul Street, Tuckey Street and Pembroke street to be temporarily closed to traffic if local businesses agree.
