Princes Highway safety and efficiency upgrades
Transport for NSW – $5 million of safety and efficiency upgrades on the Princes Highway Mogo and Coila
Safety and efficiency upgrades on the Princes Highway, Mogo
Transport for NSW report “We are delivering $2.8 million of safety and efficiency upgrades on the Princes Highway between Deep Creek Dam Road and Burkes Lane, Mogo.
These upgrades will improve safety, efficiency and traffic flow on this section of the Princes Highway and is being delivered as part of the Princes Highway corridor safety and efficiency upgrades program.
What work are we doing?
Safety upgrades to be delivered on this 3.5-kilometre section of the highway include:
·installing one-metre-wide centreline
·installing audio tactile line marking, commonly known as ‘rumble strips’, along the centre and edge lines
·installing and upgrading around 2.5-kilometres of roadside flexible steel rail barriers
·shoulder widening and upgrading roadside drainage
·reinstating existing line marking
·road widening to accommodate the widened centreline and road shoulders
When and where we’ll be working?
We’ll be working on the Princes Highway at Mogo, between Deep Creek Dam Road and Burkes Lane, from Tuesday 3 February 2026 for around 12 weeks, weather permitting.
Work hours will be between 7am and 6pm weekdays and 8am to 1pm Saturdays. No work is planned to be carried out on Sundays or public holidays. Work will be scheduled to avoid the busy Easter holiday period.
What are the benefits of these improvements?
The upgrades will increase safety, efficiency and traffic flow, providing road users with a smoother, safer journey along the Princes Highway.
Widened centreline: A widened centreline replaces the existing centreline with two new centrelines spaced one metre apart to increase the space between vehicles travelling in opposite directions, reducing the risk of head-on crashes.
Audio tactile line marking (rumble strips): Audio tactile line marking involves placing small, raised bumps or milled-in grooves along or next to edge lines and centrelines of roads to alert drivers or riders when they are drifting out of their lane, allowing them to correct their path and prevent a crash.
Shoulder widening: Road shoulders serve multiple purposes, including providing a space for vehicles to recover or avoid hazards and providing a safe area for broken-down vehicles to stop. They also provide additional space on approach to intersections to allow left-turning vehicles to safely exit the highway.
Roadside flexible safety barriers: Flexible steel rail barriers along the roadside help redirect vehicles back into their lane, preventing crashes with roadside hazards. They are designed to absorb impact forces, lowering the risk of serious injury or death in the event of a crash.
Princes Highway and Hector McWilliam Drive intersection upgrade
We are building a left turn slip lane at the Princes Highway and Hector McWilliam Drive intersection at Coila.
This $2.25 million intersection upgrade aims to improve safety, efficiency and journey time reliability for all motorists, particularly during peak holiday periods.
What will the intersection upgrade include?
Work will include:
·building a left turn slip lane with southbound acceleration lane from Hector McWilliam Drive onto the Princes Highway
·installing roadside safety barriers on the southern corner of the intersection, adjacent to the commuter carpark.
See artist’s impression below of the final layout and design of the intersection upgrade:
Why are we upgrading this intersection?
The intersection is an important link for residents and tourists as it provides the primary access to Tuross Head.
Currently, motorists wanting to turn left from Hector McWilliam Drive onto the Princes Highway to travel south, must do so from a complete stop. This can be challenging in a 100 km/h zone and can often result in delays on this approach, impacting journey time reliability, particularly during peak holiday periods.
In response to community feedback about the need to improve safety and efficiency at this intersection, the NSW Government committed funding to develop and deliver a left turn slip lane from Hector McWilliam Drive onto the Princes Highway.
Providing a left turn slip lane will make it easier and safer for left turning vehicles to enter the highway from Hector McWilliam Drive, as it will allow them to accelerate and safely merge at speed with southbound through traffic, improving safety and efficiency.
When will work start and how long will construction take?
Work will start on Monday 9 February and is expected to take around 12 weeks to complete, weather permitting.
Work hours will be 7am to 6pm weekdays and 7am to 1pm Saturdays, as required. No work will be carried out on Sundays or public holidays. Work will be scheduled to avoid the busy Easter holiday period.
Member for Bega, Dr. Michael Holland said “I welcome this $5 million investment to improve sections of the Princes Highway for our road users across Eurobodalla, including families, workers and tourists. We thank the community for their patience while this work to ensure the ongoing resilience of our roads is carried out.”
Other projects and improvements in the area
As part of the Princes Highway corridor safety and efficiency upgrades program, Transport is planning for upgrades of the intersections at Larry’s Mountain Road in Moruya and Bingie Road at Bergalia.
Also under the program, Transport is commencing additional safety improvements on the Princes Highway at Batemans Bay this year. More details about these projects will be provided as the next phase of the program is developed.