New South Road Alignment and Major Bus Detours: Adelaide Commute Update for March 12

Morning Commute Overview

Commuters across Adelaide should prepare for a mix of new permanent road alignments and ongoing maintenance projects this Thursday, March 12, 2026. While the tram network has returned to full operation following recent upgrades, significant changes to the North-South Corridor and localized bus stop closures remain the primary focus for those heading into the CBD or navigating the suburbs.

Major Arterial Changes: South Road and T2D Project

The most significant shift for motorists this week is the new traffic alignment on South Road in Torrensville. Following the completion of major works over the long weekend, northbound traffic between Ashley Street and West Thebarton Road has been switched onto newly constructed lanes. While the number of lanes remains the same, the positioning and line marking have changed to accommodate the upcoming Tunnel Boring Machine launch site.

Drivers must be aware of new permanent turning restrictions at the intersection of South Road, West Thebarton Road, and Ashwin Parade. Specifically, right turns from West Thebarton Road and Ashwin Parade onto South Road are now prohibited during peak periods (7:00 am to 10:00 am and 2:00 pm to 6:00 pm, Monday to Friday). Additionally, heavy vehicles exceeding 8.8 meters are restricted from turning right at this intersection at all times, with detours directed via Port Road.

Public Transport Alerts and Bus Detours

Adelaide Metro has reported several active disruptions affecting bus commuters today:

• Norwood: Today marks the final day of scheduled stop closures on Portrush Road. Routes 300, 630, 922, 963, 992, and 992 may experience minor delays or shifted boarding points in the Norwood area.
• Torrensville: Routes 286, 287, and 288 continue to operate on detours near the South Road and West Thebarton Road intersection due to the ongoing T2D construction.
• Davenport Terrace: A detour and stop closure are active at Stop 39 (East side) until Friday, March 13, affecting route 645.
• Blakeview and Fairview Park: Long-term detours remain in place for Craigmore Road (Routes 442, 443, 471) and Yatala Vale Road (Routes 542, 542X, 929) due to infrastructure maintenance.

Roadworks and Congestion Hotspots

Motorists using Sir Donald Bradman Drive and James Congdon Drive should expect heavier-than-usual traffic as intersection upgrades continue. These works aim to improve future access to the airport and CBD but are currently causing peak-hour bottlenecks. In the hills, maintenance continues on the Balhannah intersection, while resurfacing preparations are beginning on Greenhill Road near Burnside. Although major resurfacing is slated for night hours starting next week, daytime speed restrictions may be present.

Finally, those traveling through the northern suburbs should exercise caution following a serious police incident reported late Wednesday in Virginia. While many investigations clear by the morning peak, secondary congestion on surrounding arterial roads is possible as traffic redistributes.