
The main road link between the Shoalhaven and Southern Highlands should be restored next month after suffering extensive damage during heavy rain and landslips in March.
Transport for NSW said restricted access to Moss Vale Road over Barrengarry Mountain will be restored by the end of July, provided no further issues are discovered during the ongoing repair work.
Kiama MP Gareth Ward said he was "extremely pleased" to report the road's planned reopening.
"After having worked closely with Shoalhaven City Council, Transport for NSW and the local community, I am pleased that work is progressing and some access to Kangaroo Valley from the north-west is likely from the end of July, weather permitting," Mr Ward said.
He said there were still three major sites needing repair before access could be restored, with one including a 50-metre section where the road had completely slipped away.
More than 235 soil nails have been installed at the other two sites so far, however both sites require a lot of work to restore stability and make them suitable for traffic.
Mr Ward said work at each site had been slightly different but all involved specialist slope stabilisation contractors installing a variety of materials to strengthen the roadway.
A Transport for NSW spokesperson said crews at the site with the largest impact had dug their way down to the foundation, stabilising the face of the excavation with more than 50 soil nails, and more than 100 square metres of reinforcing mesh and concrete,.
“Work also started this week to bridge the foundation, placing more than 250 tonnes of rock fill so the road embankment can be rebuilt.”
The spokesperson said initial field investigations, including geotechnical assessment and drilling, was completed in April.
“These investigations helped identify the extent of damage, the cause of the failure and informed the accelerated development of immediate repair options, while also collecting valuable data to inform long-term solutions,” the spokesperson said.
“Some delays were experienced early on as the ground conditions were not as expected and ongoing wet weather impacted access to the foundation, requiring crews to review and reassess their initial plan.
“While we are confident restricted access will be restored on Moss Vale Road at Barrengarry Mountain by the end of July, but are mindful further challenges could arise, particularly if we get another bout of bad weather.”
Transport for NSW will continue to keep the community informed on the progress of work on Barrengarry Mountain, including what the restricted access will be.
The shuttle bus services will remain in place until restricted access can be provided for road users.
All options for restricted access will be considered, including night closures while work continues, or single lane access under stop/slow traffic control if work permits.
"We haven't made that decision yet but everything we do is guided by safety," Mr Ward said.
"We obviously want to make sure the road is safe for everyone using it, but at this point we are confident, based on where we are at with the restoration, that we will be able to have limited traffic open by the end of July, subject to any further weather incidents that might cause grief for us as we go about trying to get this road reopened."
Image: Gareth Ward / Facebook