The $13 million project is jointly funded by the Federal and South Australian Governments, with the aim of improving travel times, network reliability and safety.
According to Federal Urban Infrastructure Minister Alan Tudge, the intersection is notorious for serious traffic accidents.
“This upgrade is essential to make sure we get locals home sooner and safer,” he said.
“We want to reduce the risk of drivers getting into accidents, injured, or worse.”
A total of 77 crashes were recorded at the intersection during a five-year period between 2014 and 2018, including one that caused a fatality and 25 causing injury.
South Australian Infrastructure Minister Stephan Knoll said that on average, more than 81,550 vehicles travel through the intersection each day.
“Main North Road is a major traffic and freight route that connects the northern parts of metropolitan Adelaide with Adelaide’s central business district, and the current intersection is operating at capacity in peak periods,” Mr Knoll said.
“That’s why this upgrade is so important, it will boost freight productivity in the northern suburbs and reduce travel times for all motorists.”
Site investigation works, to identify the location and depth of all utility services in the vicinity of the proposed upgrade, are underway, forming part of the early design process.
Early works are expected to commence in the second quarter of 2020, with major construction expected to begin in late 2020.
Consultation closes Friday 20 March.