[3] The roundabout is intended to reduce delays at the end of holiday periods when many people try to drive back towards Adelaide at the same time, and will permit road trains to operate between Port Wakefield and Ardrossan which had previously not been permitted due to limitations of that intersection.

Subsidiary works improved the Yorke Highway north of Ardrossan with a widened bridge, sealed shoulders and overtaking lanes.

[6] A proposal by the Liberal Party of Australia before the 2018 state election was that if it was elected it would build a single lane overpass at the Port Wakefield end of the Copper Coast Highway to reduce traffic conflicts.

[7] The party won the election and upgraded the planning to completely grade-separate the intersection.

[11] Project construction commenced in late 2020, with completion expected in 2022;[9] the overpass opened in December 2021, four months ahead of schedule.