Motorists heading to and from Appin and Campbelltown “outside peak hours” will need to find an alternate route for the next three days.
Roads and Maritime Services will close Appin Road between Appin and the M1 Princes Motorway from Tuesday to Thursday between 9am and 3pm.
However, buses will continue to travel on their routes between Wollongong and Campbelltown.
People with a booking at the Cataract Scout Park off Baden Powell Drive will be given access by traffic controllers on site.
Road crews will be carrying out maintenance work, including clearing gutters and drains, trimming vegetation and removing dead or dangerous branches.
Detours for light vehicles will be in place via Wilton Road, Picton Road and the M1, adding about 10 minutes to travel times.
Detours for vehicles over 12 tonnes and 15 metres will be via the Hume Motorway, Picton Road and the M1, adding about 15 minutes to travel times.
Appin Road was partially closed on Monday, March 5 following a truck accident near Rosemeadow.
Source: Illawarra Mercury