Moss Vale Rd roundabout works update - Far North Collector Rd Network
Published on 10 November 2023
Motorists travelling on Moss Vale Road are being asked to allow extra travel time from Tuesday 14 November as works progress on the final roundabout for the Far North Collector Road Network.
Geotechnical investigations recently uncovered unsuitable foundations on the final section of the Far North Collector Road pushing the road opening out by several months.
The new stretch of road connects Illaroo Road in North Nowra with Moss Vale Road in Cambewarra. While the main alignment is largely completed, the final roundabout at Moss Vale Road requires extensive foundation improvement involving the replacement of poor material. To undertake the work, Moss Vale Road (west of Bells Lane) will be reduced to one-lane under traffic lights 24 hours a day, with delays of up to five minutes.
Carey McIntyre, Director City Services, said the geotechnical issues were not identified during the initial investigations and only revealed when the contractor began construction.
“Major construction projects have their challenges, with ground conditions difficult to predict until excavation begins,” Mr McIntyre said.
“The unsuitable sub-grade at the roundabout location means we need to replace the existing sub-grade material to provide greater stability under traffic loads,” he said.
“Moss Vale Road is a major arterial route and new construction projects are required to meet the stringent standards of Transport for NSW who own and manage the road.”
Work to complete the improvement of the ground and roundabout includes:
- Over excavation of the road to as deep as two metres below existing levels
- Placement and compaction of external material to replace the poor material
- Testing and acceptance from TfNSW
- Placement of pavement layers
- Traffic swap and completion of works for the east bound lane.
To undertake the works safely due to the depth of the excavation, the program includes:
- One-lane under traffic lights, 24 hours/day, 14 November to 20 December 2023. Traffic controllers will be in place during peak time to assist the flow of traffic.
- Two-way operation will return by 21 December to early January 2024.
- One-lane under traffic lights will resume early January until works are complete.
The new project completion date is the first half of 2024.
The Far North Collector Road Network project is 100 percent federally funded. Head to Council website for more information.