Traffic patterns will be changing soon at Preston Ave. South and Circle Drive South.

It's all part of the south bridge project. A new traffic interchange will be built at the intersection.

North-south traffic will be controlled at two intersections with signal lights, and a detour road will be in place to accommodate east-west traffic in the area. As usual, the speed limit will be 60 kilometres an hour.

Planners say construction should start by the middle of September. The construction is scheduled to last a year.