A section of George Bass Drive at Lilli Pilli will stay closed to traffic until mid-December to allow the major road safety upgrade at Grandfathers Gully to be fully completed.
The road was closed in June and Eurobodalla Council infrastructure director Warren Sharp said it would open to traffic on Friday, December 17.
"The temporary detour using the Link Road, Ridge Road and Tallgums Way is working well," he said.
"Extending the road closure allows construction to safely continue to completion, without the need to manage high loads of traffic through a very busy jobsite.
"We will continue to review the need for the detour as work progresses."
READ MORE: Drivers urged to keep out of roadwork sites
George Bass Drive is a critical regional transport route and the section of road with several tight bends between Grandfathers Gully and Denise Drive has a poor history of road crashes.
Mr Sharpe said the upgrade and realignment would significantly improve drivers' line of sight, provide protected right-turn intersections, widen lanes and shoulders, and improve linemarking.
"George Bass Drive was the key evacuation route in the Black Summer fires while the Princes Highway was inaccessible," he said.
"This upgrade at Lilli Pilli complements other projects along the road, creating a safer, more resilient route."
Excess material cut from the Grandfathers Gully realignment will be used at four other safety projects along George Bass Drive:
- The duplication of northbound lanes north of Sunshine Bay Road;
- A new auxillary left-turn lane into North Rosedale;
- Widened road shoulders at the Geurilla Bay turnoff; and
- Shoulder fill to remove the hazardous drop-off north of Carramar Drive.