What's happening
Mitchell Freeway northbound off-ramp access to Cedric Street eastbound reduced to one right turn lane
We are continuing to progress modification works to the Mitchell Freeway / Cedric Street interchange and road works to align Cedric Street westbound with the future local road connecting to Stephenson Avenue.
The Mitchell Freeway northbound off-ramp to Cedric Street eastbound will be changed from 18 July 2025 with the two right turn lanes reduced to one lane.
The reduction will be in place until the new Stephenson Avenue interchange is open in late 2025 and the existing Cedric Street northbound off-ramp is permanently closed.
These changes are part of ongoing works to improve traffic flows, provide better local access throughout the area and increase capacity for the local transport network.
There will be signage in the area to support these changes and motorists are encouraged to follow this signage and exercise caution when turning eastbound onto Cedric Street from Mitchell Freeway northbound.
There will be no changes to the left turn westbound lane onto Cedric Street from Mitchell Freeway northbound.
The timing of work is subject to favourable weather conditions and workforce availability.
When traffic management meets innovation
The Stephenson Avenue Extension project has recently had the exciting opportunity to take part in an automated cone truck trial, testing out the only one of its kind in WA.
The Main Roads automated cone truck is designed to deploy and retrieve traffic cones automatically, using a robotic arm. The truck stores 399 cones and can lay a cone approximately every 10 seconds. This means a kilometre of road can be delineated in approximately 7 minutes.
The truck reduces disruption to road users, increases productivity and significantly reduces the risk of injury to traffic management workers who are often in high-risk situations by laying cones next to traffic.
Trials on our project has allowed drivers to gain experience operating the truck in a controlled environment coinciding with planned lane closures on Mitchell Freeway.
This trial also enables Main Roads to compile data on the truck’s operations including timing and speed which can help improve the trucks efficiency.
The truck will predominantly be used across the Perth Metro area but will also feature on regional road projects, particularly where high speed roads are involved.
Take a look at the truck in action during the trial.
traffic flow
connectivity
capacity