Brisbane Lord Mayor Campbell Newman says the Council is looking at a range of options to ease traffic congestion on Kingsford Smith Drive.
One of the possibilities is a two-kilometre, double-storey tunnel under the Brisbane river between Newstead and Hamilton.
Councillor Newman says improving the bottleneck will be a challenge.
“We’ve got a cliff, houses on top of that hill, and the riverbank,” he said.
“We’ve got nowhere to go, nowhere to manoeuvre and that’s why we’re looking at a variety of different options like widening out over the river, a tunnel or a combination thereof so we’re working on those things.
“We actually have made an early submission to Infrastructure Australia for a sum of $693 million.”