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Main North Road and Nottage Terrace Intersection Upgrade

About the project

The Australian and South Australian Governments are jointly funding the $19 million upgrade of the Main North Road and Nottage Terrace intersection.

The Australian Government’s commitment is part of the Commonwealth Urban Congestion Fund. The South Australian Government’s commitment was announced as part of the last State Budget, to bust congestion by upgrading a number of metropolitan intersections. The South Australian Government’s Keeping Metro Traffic Moving Report identifies this intersection as priority location for treatments that address road congestion and keep traffic flowing.

The Main North Road and Nottage Terrace intersection is located approximately three kilometres north of Adelaide’s Central Business District (CBD). The intersection forms part of the Outer Ring Route, which is a major traffic route. Main North Road is also a high frequency public transport corridor. This intersection plays a vital role in moving traffic from the north-east to the south, bypassing Adelaide’s CBD.

The right turn from Main North Road onto Nottage Terrace is a key movement for vehicles travelling from the south and CBD to the north-eastern suburbs.

The existing single right turn lane causes problems due to the inadequate capacity, resulting in long delays for peak traffic including disruptions to vehicles heading north on Main North Road through the intersection.

There is a need for additional capacity on all approaches to the intersection and to provide additional right turn capacity from Main North Road onto Nottage Terrace.

On average more than 67,000 vehicles travel through the intersection each day.

There have been 31 reported crashes at the intersection in the past five years, consisting of 12 minor injury crashes. Approximately 65% of all crashes were rear end crashes.

The Main North Road and Nottage Terrace Intersection Upgrade scope includes:

  • widening of Main North Road (west side), with the installation of dual right turn lanes onto Nottage Terrace travelling eastbound, two through lanes on Main North Road travelling northbound, and the addition of a priority bus lane through the intersection travelling northbound;
  • widening of Main North Road (east side) to accommodate the left turn lane onto Nottage Terrace travelling eastbound and the extension of the bus priority lane at the intersection travelling southbound;
  • widening of Nottage Terrace (south side) to accommodate the extension of the right turn lanes travelling northbound from Nottage Terrace onto Main North Road;
  • changes to access on Wilson Street, College Avenue and Victoria Avenue to accommodate the proposed treatments;
  • upgraded pedestrian crossings within the intersection, including new pedestrian crossing lights and ramps;
  • extension of the existing northbound bicycle lane on Main North Road through the intersection;
  • pavement construction and surfacing; and
  • new and upgraded traffic signals, road lighting, line marking, and drainage.

Service relocation works commenced in September 2020, with main works expected to commence in early 2021, weather permitting.

Artists impression of the upgrade

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

Community Engagement

The Department for Infrastructure and Transport sought feedback from the community regarding the proposed concept design.

All feedback received from the community was reviewed and considered by the project team and as a result the concept design has been updated to include:

  • Left turn access from Wilson Street onto Main North Road retained.
  • Right turn access from Main North Road onto College Avenue retained.
  • Right turn access from Victoria Avenue onto Nottage Terrace retained.
  • Eight car parks on the north side of Nottage Terrace between the intersection and Corban Road retained.

To download a copy of the updated concept map please click here

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.

What’s next?

Community and stakeholder engagement

The Department will continue to liaise with the community as the design is developed. All feedback and concerns will be considered as the project team continue through the design process to identify a solution that balances the needs of the project’s various stakeholders, as much as practically possible, whilst delivering on the project’s objectives.

Early site works

Service relocation works commenced in September 2020, and are expected to be complete in early 2021, weather permitting.

Telecommunication relocation works, including works by Telstra, NBN, Optus, TPG and Vocus, are underway on site and are progressing well. APA Gas and SA Water are scheduled to commence asset relocation works in late November 2020. SA Power Networks are scheduled to undertake asset relocation works in early 2021.

Major works are expected to commence in early 2021, weather permitting.

Current Intersection

Artists impression of the upgrade

Artists impression of the upgrade


Project Updates

Rescheduled community information session invitation - December 2020

Service relocation night works - November and December 2020

Project update and community information session invite - November 2020

Service relocation works - September 2020

Early service relocation works - September 2020

Small Business Fact Sheet - August 2020

Night works for site investigations - August 2020

Project update and opportunity to provide feedback - April 2020

Latest concept plan - April 2020

Project update and planning study - December 2019

Media Releases

Sunday 11 October 2020 - Building what matters for South Australia

Wednesday 07 August 2019 - Infrastructure agreement to bust congestion across Adelaide

Monday 17 June 2019 - Building grade separations to bust congestion and cut travel times

Saturday 1 June 2019 - $51 million to bust congestion in northern suburbs

Further information

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