The stretch of road where actress Jessica Falkholt and her family were involved in a fiery two-car crash on Boxing Day will have a safety barrier installed in time to stop more deaths over Easter.

The 29-year-old former Home and Away actress died three weeks after the head-on car collision that also killed her parents and sister as well as the driver of the oncoming car.

The NSW government last month announced a wire barrier would divide traffic on the Princes Highway on the south coast.

Roads Minister Melinda Pavey on Sunday announced the safety barrier at Bendalong was being fast tracked for the busy Easter long weekend.

“We all remember the serious crash that happened on Boxing Day,” Ms Pavey said in a statement.

Works for the $350,000 wire rope will start on Wednesday.

Rumble strips will also be installed between Bendalong and Luncheon Creek roads.

The government last month said a statewide audit of roads would identify the most dangerous strips in need of the safety upgrades, but the Princes Highway stretch was prioritised and rushed through.

The scene of the fiery Boxing Day crash on the Princes Highway at Mondayong, NSW. Photo: Channel Nine

“We wanted to prioritise work on the Princes Highway following that terrible accident on Boxing Day that really had a major impact on all people across NSW and Australia,” Ms Pavey said.

“It is a priority, we’ve brought that one forward, we are continuing to audit all parts of the state.”

The works were part of a road safety package to tackle increased death tolls on NSW roads.

“The road toll in 2017 was tragic, with 392 people dying on our roads,” Ms Pavey said.

“Many of these crashes can be avoided with simple road infrastructure upgrades.”

Almost 80 per cent of fatalities on country roads – where the speed limit is 100km/h or higher – involved the car crossing onto the wrong side of the road or running off the road, she said.

Ms Falkholt died at Sydney’s St George Hospital in January, three weeks after the fiery smash.

She survived surgery that included the removal of part of her skull and her kidney, but her life support was turned off on January 12.

Her parents Lars, 69, and Vivian Falkholt, 60, were killed in the head-on crash.

Her sister Annabelle, 21, a childcare worker, died three days after the crash in Liverpool Hospital.

The driver of the second car, 50-year-old Craig Whitall, died at the scene when both cars were engulfed in flames.

-with ABC