A safety study into Appin Road that was commissioned in late 2012 is close to being released.
A study into the stretch of road that runs from Copperfield Drive, Rosemeadow, in the north down to Bulli Tops was announced by Roads Minister Duncan Gay in December 2012.
The decision to request the review by the Centre for Road Safety and Roads and Maritime Services (RMS) came after Wollondilly MP Jai Rowell and representatives from Campbelltown, Wollondilly and Wollongong councils had met the minister to highlight their concerns over Appin Road.
Their concerns were prompted by two fatal crashes on the road in 2012, just a month apart.
In September 2012, Brock Anderson, 8, died when his father's Holden Commodore and a Subaru Impreza collided on the road.
A month later, Thomas Scott-Dobie, 19, died after his car and a ute collided east of the entrance to the Westcliff Colliery.
A Transport for NSW spokesman said the detailed report was being completed and would be released early next month.
The report included a detailed look at the road, what the relevant safety issues were and what could be done to address them, the spokesman said.
Though the wait for the report's release was long, work on Appin Road continued.
It is understood some of this work will address safety issues raised in the forthcoming report.
In 2012 a damaged bridge was repaired and several sections of the road were resurfaced.
Last year, new line marking was put down at Lodden River.
And this year rebuilding work has begun on the road west of Westcliff Colliery.
Last month the O'Farrell government released spending figures and said it planned to devote $745,000 to the road in the first six months of this year.