Construction To Begin On New Bridge At Darlington Upgrade Project

Construction To Begin On New Bridge At Darlington Upgrade Project

South Australia Minister for Transport and Infrastructure Stephen Mullighan

Darlington Traffic Switch To Allow For Construction Of Next Major Bridge

Victor P Taffa

Major construction is set to begin on a new bridge at the northern end of the 370-job Darlington Upgrade Project.

“Darlington Upgrade is a key part of delivering a 78 km non-stop North-South Corridor running between Gawler and Old Noarlunga.” Minister for Transport and Infrastructure Stephen Mullighan said.

“This section of South Road is a notorious and frustrating bottleneck, just ask any motorist who sits in bumper-to-bumper traffic every day.”

Significant changes to traffic movements are being made this weekend to prepare for the start of construction of the new bridge at Ayliffes Road.

It will allow traffic from the non-stop motorway to pass over the South Road/Shepherds Hill Road intersection and continue east on Ayliffes Road.

It is one of 8 new bridges being built for the $620 Million project and coincides with another milestone of the completion of piling works which has seen a total of 2,375 piles constructed across the entire work site.

Over the weekend traffic on Ayliffes Road will be switched to the edges of the roadway.

Bridge beams will also be installed for another new bridge at Flinders Drive.

Construction is continuing on the second bridge over the Southern Expressway which is being built off site and will be moved into place later this year using self-propelled modular transporters.


Ayliffes Road traffic switch will occur between South Road and Norman Street in St. Marys.

Traffic restrictions will be in place from 8 pm tomorrow night until 6 am Monday morning.

Once the traffic switch is complete, a reversible lane will be in operation on Ayliffes Road during peak periods.

These arrangements will maintain traffic capacity on Ayliffes Road during construction allowing

  • 3 lanes of eastbound (city bound) traffic from 6 am to 10 am,
  • 3 lanes of westbound (outbound) traffic from 2 pm to 8 pm,
  • 2 lanes of traffic will operate in each direction at all other times.

3.3 km Darlington Upgrade will deliver a non-stop roadway between the Tonsley Precinct and the Southern Expressway, bypassing 5 sets of traffic lights, while also providing connections to local streets.

8 bridges are being built for the project including:

  • Tonsley Boulevard,
  • Over the Sturt River,
  • Flinders Drive,
  • Sturt Road,
  • Mimosa Terrace and Sutton Road,
  • Ayliffes Road,
  • 2 bridges over Southern Expressway.

Project also includes extending the existing Tonsley rail line by 620 metres, via a rail overpass, terminating at a new station next to the Flinders Medical Centre.