Fast facts

Status

Stage 1 - Works underway Stage 2 - Planning study underway

Location

Main South Road, between Myponga and Cape Jervis.

Funding

$111.8 million (50:50) State and Federal Government.

About the project

Overtaking lane locations

Three overtaking lanes are being constructed at:

• Normanville to Second Valley (northbound)
• Second Valley to Delamere (southbound)
• Delamere to Cape Jervis (northbound)

What's happening

Construction of the overtaking lanes commenced at all locations in early 2026. Each overtaking lane will involve:

• road widening for northbound and southbound overtaking;
• new pavement and surfacing;
• sealed and unsealed shoulders;
• upgraded drainage;
• wide centreline marking and installation of safety barriers;
• audio tactile line-marking.

Construction at all Stage 1 locations is expected to be completed in early 2027.

Community engagement

In 2023 feedback was sought to help us better understand potential locations for the three new overtaking lanes. This engagement process was an early opportunity to hear community insights and understand local experiences that might not be captured by a technical analysis.

More than 190 pieces of feedback were received, including 151 interactive map comments and 16 survey submissions. Thank you to everyone who took the time to provide feedback.

Feedback received during the September and October 2024 information sessions, relating to the new proposed locations for the overtaking lanes, has shown the key areas of interest are:

• environmental investigations undertaken and vegetation impacts
• safety concerns for existing bus stops on Main South Road, north of Paradise Drive, Wirrina Cove
• speed limits at entry/exit points along Main South Road e.g. Paradise Drive
• traffic volumes, particularly light/short towing vehicles (towing trailers, caravans, boats)
• reasoning behind the preferred locations
• driveway access along new overtaking lane locations and future sightlines
• drainage and erosion issues and the need to incorporate solutions into preferred overtaking lane locations

More detail on What we heard can be found here.

Updates to design

In response to feedback and further technical analysis, the new detailed designs have incorporated the following:

• Shifting the northbound overtaking lane location one (between Normanville and Second Valley) further east to reduce impacts on established vegetation.
• Installation of wide centreline treatment to improve safety.
• Maintaining access to properties along the overtaking lane locations.
• Improved roadside drainage at each of the overtaking lane locations.

Overtaking lane locations

Planning is underway for additional upgrades between Myponga and Yankalilla, including:

• Two new overtaking lanes
• Curve easing and road widening
• Widening of narrow bridges and culverts

These works will improve safety and reduce delays for all road users travelling to and from the Fleurieu Peninsula.

This section of road carries approximately 1,200 to 2,200 vehicles per day and will be upgraded over a five-year period.

What’s happening

Community input will play an important role in informing the detailed design. Further engagement opportunities will be announced soon.

Community engagement

In January 2026, feedback was sought from the community through information sessions held in Cape Jervis, Myponga and Normanville.

Key feedback included:

• Concerns about tight curves, steep hills and narrow road sections
• Poor road surface conditions, particularly due to heavy vehicle use and drainage issues
• Limited safe overtaking opportunities
• Strong support for road widening, curve easing and overtaking lanes
• Concerns about speeding and requests for additional wildlife signage

Contact

Engagement Team

• DIT.Engagement@sa.gov.au
• 1300 794 880

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