The design of a $14 million upgrade of a traffic bottleneck at Kirrawee has been modified following community feedback.
Dual signalised right turn lanes and left turn slip lanes will be provided for traffic exiting Waratah Street on to Princes Highway.
Initial plans by Transport for NSW included only one left-turn slip lane from Waratah Street into the highway.
"In response to community feedback Transport will change the proposal to provide dual left turn slip lanes exiting Waratah Street," the authority said in a community consultation report.
The upgrade is expected to reduce average delays by more than 50 per cent during both peak periods and will complement the widening of the highway in that area, which is all but complete.
Miranda MP Eleni Petinos said major work was expected to start in late 2023 and would take about 18 months to complete.
"More than 2.5 million vehicles travel through this intersection every year, making it one of the busiest in southern Sydney," she said.
Other features of the upgrade will include:
- Widening of Princes Highway western verge to provide a dedicated northbound left turn lane from Princes Highway onto Waratah Street.
- Relocation of the signalised pedestrian crossing from Princes Highway southern approach to northern approach.
- Installation of a signalised pedestrian crossing across Waratah Street.
- Extension of the central median along Waratah Street to restrict right-turn movements into and out of the adjacent service road.