Media Release from Transport for NSW: 19 June 2025
Motorists are advised of upcoming night closures of the M1 Princes Motorway (Mount Ousley Road) and Picton Road for work to be carried out as part of the Mount Ousley interchange project.
Work will include removal of vegetation, installing barriers and signs, piling work for signage and gantries, building site access gates, removing signs and gantries, removing guard rail, completing drainage work, relocating utilities, installing temporary street lighting, pavement work and line marking.
Work will be carried out on Sunday 22, Monday 23 and Wednesday 25 June, weather permitting.
Road closures will be in place on the M1 Princes Motorway between Bulli Tops and Memorial Drive, and Picton Road between the M1 Princes Motorway and Almond Street at Wilton.
Detours will be in place each night between 8pm and 4am. Picton Road eastbound will be closed from 7.30pm to 4am to ensure the M1 Princes Motorway is clear by 8pm.
Heavy vehicles over 19 metres long and over 50.5 tonnes will not be able to access Bulli Pass and are advised to delay their journey.
Heavy vehicles over 19 metres or more than 50.5 tonnes will be given a window of access at 12am (midnight) during the full closures on Monday 23 June and Wednesday 25 June.
Motorists travelling between Wollongong and Bulli Tops will be detoured via Memorial Drive and Bulli Pass and should allow up to 15 minutes additional travel time.
Motorists travelling between Wollongong and the Hume Motorway will be detoured via Memorial Drive, Bulli Pass and Appin Road, and should allow up to 40 minutes additional travel time. Light vehicles can also use Wilton Road (Broughton Pass) between Appin Road and Picton Road or the Illawarra Highway (Macquarie Pass).
Local access to Mount Ousley Road between the Princes Highway and Gowan Brae Avenue will be maintained.
Motorists are advised to drive to the conditions and follow the directions of signs and traffic control.
Electronic message signs will advertise road closure dates in advance. For more information visit https://www.livetraffic.com/
Transport for NSW thanks the community for its patience while work is carried out.