The west-bound lane of Summer Street will be closed to traffic on Saturday from 12.30 due to a street march as part of Brass Celebrations.
Instead of complete road closures, traffic from Lords Place, Anson Street and Sale Street that cross Summer Street will be managed by traffic control staff.
As the last of the bands passes, the streets will be opened again.
The bands will leave Robertson Park at 12.30 and are expected to arrive at Cook Park by 12.50.
When they reach the Summer Centre shopping centre, the bands will march on the footpath instead of the roadway.