Two Way William Street

The City will transition parts of William Street and Brisbane Street from one way to two way traffic later this year to make it easier for people to get around.

The change to two way traffic is part of the wider CBD plan to free up traffic flows by eliminating one-way streets and has been in the pipeline for a number of years. It brings a number of benefits for our community, motorists and local shop owners. It will improve travel times, create a safer roadway, reduce bottle necks, allow better flow of people from the City of Perth side of William Street and make it easier to navigate.

A date has not been set for the changeover to two way traffic. Once this is confirmed, it will be widely advertised beforehand including in local papers, social media, information bulletins and (flashing) variable message boards and we have plans to help drivers navigate the new road environment once it changes to two way.

Two way William Street


In the coming months, roadworks are planned in preparation for the changeover to two way.

We are installing new signal poles and cabling, which will require trenching across intersections, and will require some road closures. We apologise for any inconvenience.

The planned works will take place between 7am to 3.30pm (weather permitting) on the following dates:

Weekend of Saturday 14 and Sunday 15 September

Traffic signal modifications at the intersection of Beaufort and Brisbane Streets. Beaufort Street will remain open under the direction of traffic controllers. However, Brisbane Street between Beaufort and Lindsay Streets, will be closed to traffic.

Week commencing Monday 16 September

Brisbane Street corner Beaufort Street. Minor road widening works (on the northern or park side) and construction of a paved nib on the southern Brisbane Street adjacent the intersection of Beaufort Street, followed by re-asphalting of the road widening and trenches. Both Brisbane and Beaufort Streets will remain open at all times.

Weekend of Saturday 21 and Sunday 22 September

Traffic signals works at the intersection of William and Brisbane Streets. Road closures and detours will be in place but will vary during the course of the works as the crew trench across each leg of the intersection.

Week commencing Monday 23 September

Minor widening works on the northeastern corner of the Brisbane and William Street intersection to accommodate the future ‘left turn’ movements, followed by re-asphalting of the road widening and trenches.

Week commencing Monday 30 September

Intersection of William Street and Robinson Avenue. Preliminary civil works in readiness for the conversion of William Street to two-way.

For more information, keep an eye out on our pages or contact us on 9273 6000 or