LEIGH St traders are welcoming the news the street in the city's west will be permanently closed to traffic, with some hoping it will open the area up to trading seven days a week.

It will be the first in a series of streets to be closed to traffic in an effort to revitalise the city's under-used laneways, which will eventually link the riverbank precinct with the Central Market.

A six-month trial period for the Leigh St closure will start on Monday, July 30.

"Leigh Street is the ideal choice to begin the revival of the city's laneways, with its already strong pedestrian activity and thriving businesses, cafes and restaurants," Premier Jay Weatherill said.

Coffee Branch owner Joshua Barker said closing the street would encourage more people to come and do more "fun stuff". "We hope it will turn a five days a week precinct into a six or seven day a week precinct," he said.

Leigh St Luggage owner Julie Barnes is supportive of the change. "I think that the street looks and feels fantastic," she said.

Stage Shop owner Lesley Visintin, however, feared her business would be "destroyed".

Bollards will be used to block the middle section of Leigh St to vehicles, while at both ends of the street there will be drop-off zones.

Right-hand turns from Currie St are no longer permitted and from July 30 right-hand turns from Leigh St on to Hindley St will also be prevented.

The Government contributed $50,000 towards the work, which includes planter boxes, trees and street seating.

Originally published as Skids put on CBD laneway traffic