South Australia


Department for Infrastructure and Transport


May 2022 - December 2022


$18 million




BMD Constructions was contracted by the Department for Infrastructure and Transport (DIT) to transform two existing junctions into roundabouts and add a left turn deceleration lane on the Sturt Highway in South Australia. As a major undivided rural arterial road, the Sturt Highway forms a vital connection between the Northern Expressway near Gawler in Adelaide’s north and Riverland and Victoria in the east.

The upgrades were designed to deliver safer and faster travel for commuters by reducing the speed at which traffic can travel and providing a clear passage for through movements in both directions. The provision of a left turn deceleration lane from Sturt Highway into Holder Top Road improves safety by reducing the risk of rear-end crashes and avoiding traffic build up.

The Sturt Highway Corridor Upgrade has been jointly funded by the Australian and South Australian governments.


The scope of works for the project included:

  • demolition of existing intersection
  • 10,900m3 of bulk earthworks
  • 360 metres of new drainage infrastructure
  • 21,750m2 of new granular pavements
  • 11,700m3 of profiling of existing pavement material
  • 3500 metres of kerbing
  • 3000 metres of road lighting conduit
  • 67 new light poles
  • 26,400 tonnes of asphalt
  • temporary traffic management
  • installation of road furniture and line marking 


  • Despite a significant increase to the original scope, the project was completed 91 days ahead of schedule.
  • BMD’s safety-focused culture led to the delivery of the project lost time injury (LTI) free over the 33,000 hours worked.
  • Fostered strong relationships with Berri Barmera Council and the local community and used 100% local subcontractors and suppliers.
  • The introduction of detours and construction of much larger online stages saved approximately three months off the overall project duration and meant the overall quality of the final surface was significantly improved.
  • Accessed a custom-built facility which allowed for production of asphalt within close proximity to each junction, an approach which significantly reduced greenhouse gas emissions through reduced haulage of raw materials and manufactured asphalt.