Picton Road is known as a koala kill hotspot due to the growing number of cars choosing to use the notorious stretch of bitumen.
In an effort to add an extra layer protection for Macarthur's disease free colony of koalas, Roads and Maritime Services (RMS) have installed 9.4 kilometres of roadside koala protection fencing.
Transport for NSW southern regional director Sam Knight said the NSW Government had allocated more than $3.3 million under the NSW Koala Strategy to protect the states koalas.
She said some of those funds were used to build the new fencing on Picton Road to will help prevent koalas from being hit by vehicles along the key corridor.
"This is the first koala hotspot being fixed by the NSW Koala Strategy, which will help ensure the safety and health of koalas in the region", Ms Knight said.
"Fencing along Picton Road was installed in key locations between Almond Street at Wilton and the eastbound rest area at Cataract.
"This will provide protection through areas of critically endangered habitat, where koalas are known to cross Picton Road,."
Ms Knight said the placement of the fencing would help to direct koalas to underpasses along the Picton Road in an effort to provide safer crossing points under the road.
"As part of this project we installed escape ramps near fence ends, to prevent wallabies and kangaroos from being trapped in the road corridor, and a specialised koala grid to prevent access to Picton Road by koalas from residential streets," Ms Knight said.
The fencing will complement additional fauna fencing and fauna underpass on Picton Road completed in 2018.
For more information about the NSW Koala Strategy, visit https://www.environment.nsw.gov.au/topics/animals-and-plants/threatened-species/programs-legislation-and-framework/nsw-koala-strategy.
For more information about the Picton Road safety improvements, visit https://www.rms.nsw.gov.au/pictonroad.