Transport for NSW have advised of changed traffic conditions starting next week on the Oxley Highway east of Warren.

Motorists are advised of changed traffic conditions on the Oxley Highway, about 30 kilometres east of the township towards Collie.

Work will start on Monday 7 March to remove and replace a culvert under the Oxley Highway.

Daytime work will be carried out between 6am and 6pm from Monday to Friday and is expected to take two weeks, weather permitting.

To reduce the impact to motorists, work will also be carried out at night between 6pm and 6am from Monday 7 March and is expected to be completed in five nights, weather permitting.

Lane closures, reduced lane widths and a reduced 40 km/h speed limit will be in place during work hours and may affect travel times.

Motorists are advised to drive to the conditions and follow the directions of signs and traffic control.

Transport for NSW thanks motorists for their patience during this time.

For the latest traffic updates visit Live Traffic or call 132 701.