South Coast rail commuters will face disruptions this weekend with Sydney Trains completing maintenance works from Coniston to Bomaderry.

From 2am on Saturday (20 September) to 2am on Monday (22 September), a range of works will be undertaken.

Transport for NSW has issued a statement to say: "We understand this work may have an impact on you and we appreciate your patience and understanding."

The works include:

• Ballast cleaning works at Albion Park

• Bridge refurbishment works at Mullet Creek Underbridge, Dapto

• Crash beam installation at Terralong Street Underbridge, Kiama

• Crossing replacement stage works at Unanderra

• Cutting works at Omega Tunnel

• Level crossing upgrade at Harley Hill Road, Berry

• Replacement of corroded overhead wiring fittings at Bombo

• Rerailing works at Dapto

• Routine civil, signal, and electrical maintenance

• Station maintenance to improve safety

• Track defect removal to improve network reliability

• Track inspection and preventative maintenance

• Track resurfacing, tamping, and rail grinding activities

• Vegetation maintenance, litter, and graffiti removal

• Welding works between Unanderra and Bomaderry.

These works will create additional noise at night. Equipment may be delivered to the worksite outside the above times.

Some deliveries may occur at night due to daytime travel restrictions on large vehicles.

Diesel work trains may have their engines running on site for an extended period.

Finishing works including the removal of equipment may take place beyond these dates.

Heavy vehicles will use local streets to access the rail corridor. Parking will be limited near access gates.

Work vehicles will be parked inside the rail corridor where possible, however on-street parking may be limited near worksites.

Traffic controllers will be on duty to assist motorists and pedestrians throughout the duration of the works.