News

Night Works - Balhannah Intersection Upgrades

18 November 2025

As part of the construction of the roundabout at the intersection of Onkaparinga Valley Road, Junction Road, and Nairne Road, the Department of Infrastructure and Transport (DIT) will be commencing asphalting and concreting works shortly.

To minimise disruption to road users, these works will be carried out intermittently at night, while day works will continue as scheduled


When: from Wednesday 19 November until early December 2025, weather permitting.

Hours of work:

  • Intermittent night works - Sunday to Friday 7.30pm until 6.00am.
  • Day works - Monday to Saturday 7.00am to 5.00pm

Where: The intersection of Onkaparinga Valley Road, Junction Road and Nairne Road, Balhannah


How this might affect you

To help keep everyone safe there will be speed and lane restrictions in place during this work. Please plan your trips, observe signage and follow the direction of onsite traffic controllers.

During the works there will be some noise, but DIT will do their best to keep this to a minimum. You may also notice some odours, which is normal during asphalt works.

Access to businesses and surrounding properties will be maintained.
Temporary pedestrian detours continue, please see onsite signage to guide you to alternate routes.


Heavy Vehicles detour

From Monday 24 November 2025 until early December 2025 a heavy vehicle detour will be in place while roundabout concreting and asphalting works are undertaken, please visit the project web page for more information.

Access for all other vehicles will be maintained through the work site.

Following the completion of this stage of work the new roundabout will open to traffic.

Lighting, signage and footpaths installation, final line marking, landscaping and other finishing works will commence in the new year.


More information

Call: 1300 794 880

Email: DIT.Engagement@sa.gov.au

Visit: www.dit.sa.gov.au/AdelaideHillsPRS