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Grand Junction, Hampstead and Briens Road Intersection Upgrade

About the project

The Australian and South Australian Governments are jointly funding the $19 million upgrade of the Grand Junction, Hampstead and Briens Road Intersection.

Grand Junction Road and Hampstead Road are key to freight movement and the existing single right turn lane at the intersection causes problems due to the slow acceleration of heavy vehicles. There is a need for additional capacity on all approaches to the intersection to allow for this movement by duplicating the existing right turn lane.

On average more than 63,100 vehicles travel through the intersection each day.

There have been 91 crashes at the intersection in the past five years, including 28 casualty crashes. Approximately 45% of all crashes were rear end crashes.

The upgrade will improve the safety of the intersection and will reduce congestion for motorists.

Early works commenced in June 2020, with main works commencing in April 2021.

The current proposed treatments for the intersection include:

  • widening of Grand Junction Road (east side), with the extension of the right turn lane onto Briens Road travelling northbound, signalised left turn lane onto Hampstead Road travelling southbound, and three through lanes on Grand Junction Road;
  • widening of Grand Junction Road (west side), with the installation of dual right turn lanes onto Hampstead Road travelling southbound and three through lanes on Grand Junction Road;
  • widening of Briens Road to accommodate dual right turn lanes onto Grand Junction Road travelling westbound and signalised left turn lane onto Grand Junction Road travelling eastbound;
  • widening of Hampstead Road, to accommodate the proposed treatments;
  • upgraded pedestrian crossings within the intersection, including new pedestrian crossing lights and ramps;
  • dedicated bicycle lanes on all approaches;
  • pavement construction and surfacing; and
  • new and upgraded traffic signals, road lighting, line marking, and drainage.

Hampstead, Grand Junction Roads Intersection

Please note, this is an artist's impression for illustrative purposes only and not a final design. Click here to download the current plan.

DIT COVID-19 Response

The Department will continue to tailor community engagement opportunities in line with the latest COVID-19 advice from health authorities.

Face-to-face engagement opportunities may be restricted and we will continue to be guided by the advice of health authorities, with the health and safety of our stakeholders always our highest priority.

Engagement with community and industry is crucial and we will facilitate information sessions as much as possible to enable face to face engagement.  It is important to assist in managing these events that you register as requested to enable physical distancing as much as possible.

Community and stakeholder consultation

Community and stakeholder engagement is important for the successful delivery of this project. As part of the project’s early concept design and review process, DIT invited the community to provide their feedback on the proposed design of the intersection upgrade. This consultation concluded on 24 April 2020.

All feedback received from the community is being reviewed and considered by the project team.

Receiving feedback from the community is important and will continue to help inform the development of the design. Major construction on the intersection upgrade is expected to commence early 2021, with project completion expected in early 2022, weather permitting.

What's next?

Major works commence

Major construction works commenced Monday, 12 April 2021 with the installation of new drainage, excavation, concrete works, and relocation of remaining underground services. Removal of existing stobie poles and street lighting will also commence and be replaced with temporary lighting towers until the new street lighting is installed. Further updates will be provided as the works progress.

The majority of the works will be undertaken Monday to Saturday, between 7am and 6pm.

Speed restrictions will be in place during the works, with lane restrictions to be implemented as required to ensure the safety of workers and road users.

Night works will be required on several occasions during major construction, and are expected to commence in May 2021. Advance notice of the night works will be provided as works progress.

For further information click here to download works notification.


Major construction commences - April 2021

Demolition works  - February 2021

Small Business Fact Sheet - August 2020

Night works notification - August 2020

Service relocation works notification - June 2020

Grand Junction, Hampstead and Briens Road Intersection Upgrade - March 2020 project update

Hampstead and Grand Junction Road Intersection Upgrade Notification - June 2019

Further information

If you have any further enquiries or would like to register your interest in the project to receive updates, please: