Southern Outlet transit lane

We are timing these works to minimise traffic impacts and make sure we aren’t working on too many sections at the same time.

We have carried out investigations of the rockface at the southern end of the proposed Transit Lane site.

The rockface is safe, but needs further protection works to reduce the risk of rocks falling during construction.

Rock protection works will happen before we start on the major construction of the Transit Lane, just down from the Olinda Grove ramp and cover about 400 metres.

Works may include the installation of protective rockfall mesh, fence, and anchors, as well as blasting in selected areas.

The contractors will determine the specific locations of these works along the 400-metre distance.

When will work start and how long will it take?

This work is expected to start later in 2025 and will take about 12 months to complete, weather permitting.

Why is this work being done?

After extensive site investigations, particularly of the rockface near the Olinda Grove ramp, our engineers identified a risk of rockfall during the construction of the Transit Lane.

While there is no current risk to road users, they found that the vibration and rock breaking work associated with construction could result in rockfall.

This means further rock stability and protection works are required before major construction work begins.

What impact will the works have on traffic?

This is still to be determined and will be discussed with the successful contractors from the tender process.

Safety of road users and workers involved in the project is a priority. Timing of works, to reduce impacts to residents and road users will also be considered.

How much of the rockface will need to be protected?

At this stage, we are looking at rock protection work over approximately 400 metres. Approximate extent of the proposed works is shown in the image below.