Upgrade and temporary closure to Solomon Road


As part of the conditions of the development of the Calleya Estate in Treeby, approximately 800 metres of Solomon Road from Jandakot to Dollier Street will be upgraded to a higher standard. To allow completion of the works in the shortest possible time, this section of Solomon Road will be closed from late November 2019 until early March 2020.

Why is part of Solomon Road temporarily closing?

The existing Solomon Road is a rural standard, two lane undivided road in this section and must be reconstructed to a higher standard for the adjacent development and increasing traffic volumes.

For the signposted speed of 70 kph and the intersections with side roads, the road must comply with current design standards for sight distance, street lighting and a central median island to protect vehicles turning into the side roads. A higher standard of safety for pedestrians and bicycle riders is also required.

The existing vertical alignment has to be significantly flattened to comply with the required design standard for safety. The depth of cut will be up to 1.5m below existing road levels and hence pose significant challenges for the construction method. There will be about 3,000 cubic metres of cut to fill on site and about 8,000 cubic metres of material removed off site. The difference in levels required between existing and required road profile is illustrated in Drawing 1 below.

Such a significant reconstruction of the road, if attempted in stages to try to maintain one lane of traffic flow, would result in a much longer disruption to traffic in the area than a complete closure for a shorter time period.

Are there other alternatives?

The City has been working with Georgiou Group to investigate viable ways of retaining at least one lane of traffic flow during the works. With the differences in road levels between existing and design levels (Image 1), reconstructing this section of Solomon Road would require multiple stages and disruption for traffic of more than twice the stated closure period, with the associated safety risk to traffic and construction staff.

Will there be diversions in place?

There will be two diversions in place for the duration of the works:

  • From Solomon Road along Cutler Road and Prinsep Road to Berrigan Drive
  • Jandakot Road and Warton Road to Armadale Road

Rural residents on the west side of Solomon Road will have permanent access via the current northern carriageway of Solomon Road throughout the closure period.

Peppworth Place will remain accessible throughout the works. Treeby residents will be able to access Clementine Boulevard onto Jandakot Road, and from Ghostgum Avenue onto Armadale Road.

What is the reason behind the project's timing?

The City of Cockburn road network is undergoing significant improvements to enhance safety and efficiency for road users.

The closure has been scheduled with immediately surrounding road works in mind, and has been timed to minimise impact on the travelling public as far as possible.

Accordingly, the closure is scheduled to commence near the completion of the Armadale Road (Tapper Road to Anstey Road) project and before the commencement of the Armadale Road to North Lake Road Bridge project.

The closure will also be implemented following completion of the new Clementine Boulevard connection to Jandakot Road, to allow an alternative access to the Calleya Estate.

A number of major road improvement projects are also scheduled to take place across the City of Cockburn road network throughout 2020 and beyond, which will be discussed at the Information Session.


To find out more, attend an information session

Tuesday 10 September 2019, 6.30-7.30pm at Cockburn ARC

If you want to find out more about the upgrade and temporary closure, an information session will be held at Cockburn ARC (Function Room), 31 Veterans Parade, Cockburn Central. To attend, register by 6 September 2019 by completing the form below.

The session will be hosted by the City of Cockburn, attended by representatives of the Georgiou Group and Stockland and chaired by Mr. Yaz Mubarakai, MP for Jandakot.


Submit a Comment

Anyone who wishes to submit a comment on the temporary closure may do so by completing the form below. Comments close 5pm, 26 September 2019 and will be presented to Council as part of their consideration to approve the temporary closure. Council will consider the results of the public consultation and make a decision at the October 2019 Ordinary Meeting of Council.




As part of the conditions of the development of the Calleya Estate in Treeby, approximately 800 metres of Solomon Road from Jandakot to Dollier Street will be upgraded to a higher standard. To allow completion of the works in the shortest possible time, this section of Solomon Road will be closed from late November 2019 until early March 2020.

Why is part of Solomon Road temporarily closing?

The existing Solomon Road is a rural standard, two lane undivided road in this section and must be reconstructed to a higher standard for the adjacent development and increasing traffic volumes.

For the signposted speed of 70 kph and the intersections with side roads, the road must comply with current design standards for sight distance, street lighting and a central median island to protect vehicles turning into the side roads. A higher standard of safety for pedestrians and bicycle riders is also required.

The existing vertical alignment has to be significantly flattened to comply with the required design standard for safety. The depth of cut will be up to 1.5m below existing road levels and hence pose significant challenges for the construction method. There will be about 3,000 cubic metres of cut to fill on site and about 8,000 cubic metres of material removed off site. The difference in levels required between existing and required road profile is illustrated in Drawing 1 below.

Such a significant reconstruction of the road, if attempted in stages to try to maintain one lane of traffic flow, would result in a much longer disruption to traffic in the area than a complete closure for a shorter time period.

Are there other alternatives?

The City has been working with Georgiou Group to investigate viable ways of retaining at least one lane of traffic flow during the works. With the differences in road levels between existing and design levels (Image 1), reconstructing this section of Solomon Road would require multiple stages and disruption for traffic of more than twice the stated closure period, with the associated safety risk to traffic and construction staff.

Will there be diversions in place?

There will be two diversions in place for the duration of the works:

  • From Solomon Road along Cutler Road and Prinsep Road to Berrigan Drive
  • Jandakot Road and Warton Road to Armadale Road

Rural residents on the west side of Solomon Road will have permanent access via the current northern carriageway of Solomon Road throughout the closure period.

Peppworth Place will remain accessible throughout the works. Treeby residents will be able to access Clementine Boulevard onto Jandakot Road, and from Ghostgum Avenue onto Armadale Road.

What is the reason behind the project's timing?

The City of Cockburn road network is undergoing significant improvements to enhance safety and efficiency for road users.

The closure has been scheduled with immediately surrounding road works in mind, and has been timed to minimise impact on the travelling public as far as possible.

Accordingly, the closure is scheduled to commence near the completion of the Armadale Road (Tapper Road to Anstey Road) project and before the commencement of the Armadale Road to North Lake Road Bridge project.

The closure will also be implemented following completion of the new Clementine Boulevard connection to Jandakot Road, to allow an alternative access to the Calleya Estate.

A number of major road improvement projects are also scheduled to take place across the City of Cockburn road network throughout 2020 and beyond, which will be discussed at the Information Session.


To find out more, attend an information session

Tuesday 10 September 2019, 6.30-7.30pm at Cockburn ARC

If you want to find out more about the upgrade and temporary closure, an information session will be held at Cockburn ARC (Function Room), 31 Veterans Parade, Cockburn Central. To attend, register by 6 September 2019 by completing the form below.

The session will be hosted by the City of Cockburn, attended by representatives of the Georgiou Group and Stockland and chaired by Mr. Yaz Mubarakai, MP for Jandakot.


Submit a Comment

Anyone who wishes to submit a comment on the temporary closure may do so by completing the form below. Comments close 5pm, 26 September 2019 and will be presented to Council as part of their consideration to approve the temporary closure. Council will consider the results of the public consultation and make a decision at the October 2019 Ordinary Meeting of Council.