The work includes major utility relocation in George Street, which will be temporarily closed to general traffic between King and Essex streets from 2 to 11 January and 15 to 18 January.
Minister for Transport and Infrastructure Andrew Constance said the light rail construction team was taking advantage of the quiet holiday period in Sydney to undertake work requiring road closures.
“Conducting this essential work during this quieter period reduces the need for weekend and night work and the impact to businesses and the community,” Mr Constance said.
“Commuters have done an outstanding job adjusting to the changes in the CBD and we’re encouraging them to keep it up – continue to plan your journeys and be mindful of the changed traffic conditions.”
George Street remains permanently closed to traffic between Park and King streets.
Public transport is the best way to travel to the CBD and if you need to travel by car, avoid peak periods and travel on routes on the edge of the CBD.
Additional lane closures will also take place on Alison Road and Anzac Parade for further tree pruning and removal from 4 to 16 January.