The NSW Government is about to begin preliminary work on a upgrade to Appin Road at Bradbury, but Campbelltown MP Greg Warren thinks more needs to be done sooner.
Transport for NSW announced it would start investigation works to aid planning on intersection improvements at the Juncture of St Johns Road and Appin Road at Bradbury between June 21 and July 30.
The upgrades are intended to improve safety and support housing growth in the Greater Macarthur Growth Area, which includes the housing development at Mount Gilead, just south of the intersection.
However, Mr Warren believes the government is taking a 'small, cosmetic approach' to upgrading Appin Road instead of making 'meaningful improvements'.
He said any work on upgrades was welcomed, but the government needed to 'stop side-stepping around the issue' and upgrade the entire road.
"The government has been well aware of the plethora of issues on Appin Road, yet they have failed to undertake any meaningful upgrades or improvements," Mr Warren said.
"Far too many motorists have been killed or seriously injured on the notorious stretch of road while countless native wildlife have also been killed after colliding with cars or trucks.
"Appin Road is no longer a dirt track used to cart coal up and down - it is a main thoroughfare connecting the ever-expanding regions of Macarthur and the Illawarra."
The government's improvement plans for the main road include two separate projects: an upgrade between Rosemeadow and Mount Gilead, and safety improvement work between Mount Gilead and Appin.
Plans are also under way to identify a suitable route option for a link road between Appin Road at Gilead and Menangle Road at Menangle Park, which Transport for NSW says would "support future housing growth and provide a key connection between Appin Road and Spring Farm Parkway Stage 1, and the Hume Motorway at Menangle Park".
Mr Warren said more needed to be done to protect wildlife and motorists, and the safety improvements needed to happen right away.
"The road needs to be duplicated to reduce the safety hazard encountered by motorists, while provisions need to be put in place to ensure native wildlife don't have to run the deadly gauntlet any longer," he said.
"Survey works at the intersection of St Johns Road and Appin Road will not reduce the inherent dangers faced by motorists travelling between Copperfield Drive, Rosemeadow and Bulli Tops.
"With the developments in Gilead and Appin, we need to see meangingful safety improvements on the road now."
The investigation works at Bradbury are expected to occur between June 21 and July 30, weather permitting, with night work Sundays-Thursdays, 9pm-5am, and day work Mondays-Fridays, 7am-6pm, and Saturdays 8am-1pm.
Transport for NSW said most work would be carried out at night to "minimise traffic disruption and reduce safety risks to workers and motorists".
Works will include locating utilities using a scanner, surveying existing drainage pits and topographical surveying.
Some temporary traffic changes will be enforced to ensure the work zone is safe, including lane closures which may affect travel times.