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. The upgrade is expected to support approximately 15 full-time equivalent jobs per year, over the life of the project.

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, and major construction works commenced in April 2021. Project completion is expected in early 2022, weather permitting.

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.

Please note, this is an artist's impression for illustrative purposes only. For further information download a copy of 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 commenced in April 2021, with project completion expected in early 2022, weather permitting.

What's next?

Major works commence

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, commencing in May 2021. Advance notice of the night works will be provided as works progress.

For further information download a copy of the latest notification.

Night works

Night works will continue until late October 2021, weather permitting.

Hours of works are between 7pm and 6am, Monday to Sunday. A respite night, where no works are undertaken, will be provided each week throughout these works.

Works during this time will be undertaken in stages on all approaches into the intersection and across the intersection. Works will include the installation of new traffic signal infrastructure and road lighting. Laying of new asphalt will also continue.

Some noise disturbance can be expected at times while these works are completed, however the work will be managed to minimise disturbance to nearby residents and businesses as much as practically possible.

For further information download a copy of the latest night works notification