The NSW Government has committed $800,000 to the project as a part of their Safer Roads Program, with the aim of improving safety for the estimated 20,000 motorists who travel along the stretch of highway each day.

"Work will involve replacing the existing barrier with a new 290 metre long wire rope safety barrier in the median, to help prevent vehicles from crossing to the wrong side of the road," a Roads and Maritime Services spokesperson said.

"Transport for NSW is working to improve road safety in Myall Lakes along this section of the highway, with guardrail already installed along southbound sections of the highway at Coolongolook.

"Other recently completed improvements at Coolongolook include median wire rope safety barrier being installed and resurfacing the southbound lanes of the highway with skid resistant treatment, to improve road safety during wet weather."

The project began on Wednesday, October 9 and was expected to be completed within three weeks, weather permitting.

It will be carried out on weekdays between 8am and 5pm.

A reduced speed limit of 40km/h is in place and motorists are advised to drive to the conditions and adhere to the directions of signs and traffic control.

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